diff --git a/sql/mysql/ruoyi-vue-pro.sql b/sql/mysql/ruoyi-vue-pro.sql
index 4d34a54..b7eee5e 100644
--- a/sql/mysql/ruoyi-vue-pro.sql
+++ b/sql/mysql/ruoyi-vue-pro.sql
@@ -462,7 +462,7 @@ CREATE TABLE `system_dict_data`  (
   `update_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
   `deleted` bit(1) NOT NULL DEFAULT b'0' COMMENT '是否删除',
   PRIMARY KEY (`id`) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 1061137 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '字典数据表';
+) ENGINE = InnoDB AUTO_INCREMENT = 1061147 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '字典数据表';
 
 -- ----------------------------
 -- Records of system_dict_data
@@ -814,6 +814,16 @@ INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `st
 INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1512, 6, '委派中', '6', 'bpm_task_status', 0, 'primary', '', '', '1', '2024-03-17 10:06:22', '1', '2024-03-08 22:41:40', b'0');
 INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1513, 7, '审批通过中', '7', 'bpm_task_status', 0, 'success', '', '', '1', '2024-03-17 10:06:47', '1', '2024-03-08 22:41:41', b'0');
 INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1514, 0, '待审批', '0', 'bpm_task_status', 0, 'info', '', '', '1', '2024-03-17 10:07:11', '1', '2024-03-08 22:41:42', b'0');
+INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1061137, 0, '评论', '0', 'bpm_comment_type', 0, 'primary', '', '流程评论类型 - 评论', '1', '2026-07-02 09:20:00', '1', '2026-07-02 09:20:00', b'0');
+INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1061138, 1, '审批通过', '1', 'bpm_comment_type', 0, 'success', '', '流程评论类型 - 审批通过', '1', '2026-07-02 09:20:00', '1', '2026-07-02 09:20:00', b'0');
+INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1061139, 2, '不通过', '2', 'bpm_comment_type', 0, 'danger', '', '流程评论类型 - 不通过', '1', '2026-07-02 09:20:00', '1', '2026-07-02 09:20:00', b'0');
+INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1061140, 3, '已取消', '3', 'bpm_comment_type', 0, 'info', '', '流程评论类型 - 已取消', '1', '2026-07-02 09:20:00', '1', '2026-07-02 09:20:00', b'0');
+INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1061141, 4, '退回', '4', 'bpm_comment_type', 0, 'warning', '', '流程评论类型 - 退回', '1', '2026-07-02 09:20:00', '1', '2026-07-02 09:20:00', b'0');
+INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1061142, 5, '委派发起', '5', 'bpm_comment_type', 0, 'primary', '', '流程评论类型 - 委派发起', '1', '2026-07-02 09:20:00', '1', '2026-07-02 09:20:00', b'0');
+INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1061143, 6, '委派完成', '6', 'bpm_comment_type', 0, 'primary', '', '流程评论类型 - 委派完成', '1', '2026-07-02 09:20:00', '1', '2026-07-02 09:20:00', b'0');
+INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1061144, 7, '转派', '7', 'bpm_comment_type', 0, 'warning', '', '流程评论类型 - 转派', '1', '2026-07-02 09:20:00', '1', '2026-07-02 09:20:00', b'0');
+INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1061145, 8, '加签', '8', 'bpm_comment_type', 0, 'primary', '', '流程评论类型 - 加签', '1', '2026-07-02 09:20:00', '1', '2026-07-02 09:20:00', b'0');
+INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1061146, 9, '减签', '9', 'bpm_comment_type', 0, 'info', '', '流程评论类型 - 减签', '1', '2026-07-02 09:20:00', '1', '2026-07-02 09:20:00', b'0');
 INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1515, 35, '发起人自选', '35', 'bpm_task_candidate_strategy', 0, '', '', '', '1', '2024-03-22 19:45:16', '1', '2024-03-22 19:45:16', b'0');
 INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1516, 1, '执行监听器', 'execution', 'bpm_process_listener_type', 0, 'primary', '', '', '1', '2024-03-23 12:54:03', '1', '2024-03-23 19:14:19', b'0');
 INSERT INTO `system_dict_data` (`id`, `sort`, `label`, `value`, `dict_type`, `status`, `color_type`, `css_class`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`) VALUES (1517, 1, '任务监听器', 'task', 'bpm_process_listener_type', 0, 'success', '', '', '1', '2024-03-23 12:54:13', '1', '2024-03-23 19:14:24', b'0');
@@ -1513,7 +1523,7 @@ CREATE TABLE `system_dict_type`  (
   `deleted` bit(1) NOT NULL DEFAULT b'0' COMMENT '是否删除',
   `deleted_time` datetime NULL DEFAULT NULL COMMENT '删除时间',
   PRIMARY KEY (`id`) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 1061099 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '字典类型表';
+) ENGINE = InnoDB AUTO_INCREMENT = 1061100 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '字典类型表';
 
 -- ----------------------------
 -- Records of system_dict_type
@@ -1726,6 +1736,7 @@ INSERT INTO `system_dict_type` (`id`, `name`, `type`, `status`, `remark`, `creat
 INSERT INTO `system_dict_type` (`id`, `name`, `type`, `status`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`, `deleted_time`) VALUES (1061096, 'IM 通话参与角色', 'im_rtc_participant_role', 0, '1=发起人；2=被邀请者；3=主动加入者', 'admin', '2026-05-18 03:36:12', 'admin', '2026-05-18 03:36:12', b'0', NULL);
 INSERT INTO `system_dict_type` (`id`, `name`, `type`, `status`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`, `deleted_time`) VALUES (1061097, 'IM 通话参与状态', 'im_rtc_participant_status', 0, '10=邀请中；20=已加入；30=已拒绝；40=未应答；50=已离开', 'admin', '2026-05-18 03:36:12', 'admin', '2026-05-18 03:36:12', b'0', NULL);
 INSERT INTO `system_dict_type` (`id`, `name`, `type`, `status`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`, `deleted_time`) VALUES (1061098, 'IM 频道素材内容类型', 'im_channel_material_type', 0, '1=站内富文本 / 2=外链', '1', '2026-05-19 14:09:25', '1', '2026-05-19 14:09:25', b'0', NULL);
+INSERT INTO `system_dict_type` (`id`, `name`, `type`, `status`, `remark`, `creator`, `create_time`, `updater`, `update_time`, `deleted`, `deleted_time`) VALUES (1061099, '流程评论类型', 'bpm_comment_type', 0, 'Flowable 评论类型', '1', '2026-07-02 09:20:00', '1', '2026-07-02 09:20:00', b'0', NULL);
 COMMIT;
 
 -- ----------------------------
diff --git a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/comment/BpmCommentController.java b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/comment/BpmCommentController.java
new file mode 100644
index 0000000..f9e5216
--- /dev/null
+++ b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/comment/BpmCommentController.java
@@ -0,0 +1,81 @@
+package cn.iocoder.yudao.module.bpm.controller.admin.comment;
+
+import cn.hutool.core.collection.CollUtil;
+import cn.iocoder.yudao.framework.common.pojo.CommonResult;
+import cn.iocoder.yudao.framework.common.util.date.DateUtils;
+import cn.iocoder.yudao.framework.common.util.number.NumberUtils;
+import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
+import cn.iocoder.yudao.module.bpm.controller.admin.base.user.UserSimpleBaseVO;
+import cn.iocoder.yudao.module.bpm.controller.admin.comment.vo.BpmCommentCreateReqVO;
+import cn.iocoder.yudao.module.bpm.controller.admin.comment.vo.BpmCommentRespVO;
+import cn.iocoder.yudao.module.bpm.service.comment.BpmCommentService;
+import cn.iocoder.yudao.module.bpm.service.task.BpmTaskService;
+import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
+import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.annotation.Resource;
+import jakarta.validation.Valid;
+import org.flowable.engine.task.Comment;
+import org.flowable.task.api.history.HistoricTaskInstance;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+
+import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertList;
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertSet;
+
+@Tag(name = "管理后台 - 流程评论")
+@RestController
+@RequestMapping("/bpm/comment")
+@Validated
+public class BpmCommentController {
+
+    @Resource
+    private BpmCommentService commentService;
+    @Resource
+    private BpmTaskService taskService;
+
+    @Resource
+    private AdminUserApi adminUserApi;
+
+    @GetMapping("/list-by-process-instance-id")
+    @Operation(summary = "获得指定流程实例的评论列表")
+    @Parameter(name = "processInstanceId", description = "流程实例的编号", required = true)
+    @PreAuthorize("@ss.hasPermission('bpm:task:query')")
+    public CommonResult<List<BpmCommentRespVO>> getCommentListByProcessInstanceId(
+            @RequestParam("processInstanceId") String processInstanceId) {
+        // 获得评论列表
+        List<Comment> commentList = commentService.getCommentListByProcessInstanceId(processInstanceId);
+        if (CollUtil.isEmpty(commentList)) {
+            return success(Collections.emptyList());
+        }
+
+        // 拼接 VO
+        Map<String, HistoricTaskInstance> taskMap = taskService.getHistoricTaskMap(
+                convertSet(commentList, Comment::getTaskId));
+        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(
+                convertSet(commentList, comment -> NumberUtils.parseLong(comment.getUserId())));
+        return success(convertList(commentList, comment -> BeanUtils.toBean(comment, BpmCommentRespVO.class, commentVO -> {
+            commentVO.setMessage(comment.getFullMessage())
+                    .setCreateTime(DateUtils.of(comment.getTime()))
+                    .setTask(BeanUtils.toBean(taskMap.get(comment.getTaskId()), BpmCommentRespVO.Task.class))
+                    .setUser(BeanUtils.toBean(userMap.get(NumberUtils.parseLong(comment.getUserId())), UserSimpleBaseVO.class));
+        })));
+    }
+
+    @PostMapping("/create")
+    @Operation(summary = "创建流程评论")
+    @PreAuthorize("@ss.hasPermission('bpm:task:update')")
+    public CommonResult<Boolean> createComment(@Valid @RequestBody BpmCommentCreateReqVO reqVO) {
+        commentService.createComment(reqVO);
+        return success(true);
+    }
+
+}
diff --git a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/comment/vo/BpmCommentCreateReqVO.java b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/comment/vo/BpmCommentCreateReqVO.java
new file mode 100644
index 0000000..17de5c7
--- /dev/null
+++ b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/comment/vo/BpmCommentCreateReqVO.java
@@ -0,0 +1,22 @@
+package cn.iocoder.yudao.module.bpm.controller.admin.comment.vo;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotEmpty;
+import jakarta.validation.constraints.Size;
+import lombok.Data;
+
+@Schema(description = "管理后台 - 流程评论创建 Request VO")
+@Data
+public class BpmCommentCreateReqVO {
+
+    @Schema(description = "任务编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "2048")
+    @NotEmpty(message = "任务编号不能为空")
+    private String taskId;
+
+    @Schema(description = "评论内容", requiredMode = Schema.RequiredMode.REQUIRED, example = "请关注报销发票附件")
+    @NotBlank(message = "评论内容不能为空")
+    @Size(max = 500, message = "评论内容不能超过 500 个字符")
+    private String message;
+
+}
diff --git a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/comment/vo/BpmCommentRespVO.java b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/comment/vo/BpmCommentRespVO.java
new file mode 100644
index 0000000..16b15a0
--- /dev/null
+++ b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/comment/vo/BpmCommentRespVO.java
@@ -0,0 +1,52 @@
+package cn.iocoder.yudao.module.bpm.controller.admin.comment.vo;
+
+import cn.iocoder.yudao.module.bpm.controller.admin.base.user.UserSimpleBaseVO;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+import java.time.LocalDateTime;
+
+@Schema(description = "管理后台 - 流程评论 Response VO")
+@Data
+public class BpmCommentRespVO {
+
+    @Schema(description = "评论编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "1024")
+    private String id;
+
+    @Schema(description = "任务编号", example = "2048")
+    private String taskId;
+
+    @Schema(description = "任务")
+    private Task task;
+
+    @Schema(description = "流程实例编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "4096")
+    private String processInstanceId;
+
+    @Schema(description = "评论类型", requiredMode = Schema.RequiredMode.REQUIRED, example = "0")
+    private String type;
+
+    @Schema(description = "评论内容", requiredMode = Schema.RequiredMode.REQUIRED, example = "请关注报销发票附件")
+    private String message;
+
+    @Schema(description = "创建时间", requiredMode = Schema.RequiredMode.REQUIRED)
+    private LocalDateTime createTime;
+
+    @Schema(description = "创建人")
+    private UserSimpleBaseVO user;
+
+    @Schema(description = "任务")
+    @Data
+    public static class Task {
+
+        @Schema(description = "任务编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "2048")
+        private String id;
+
+        @Schema(description = "任务名称", requiredMode = Schema.RequiredMode.REQUIRED, example = "经理审批")
+        private String name;
+
+        @Schema(description = "任务定义的标识", requiredMode = Schema.RequiredMode.REQUIRED, example = "Activity_one")
+        private String taskDefinitionKey;
+
+    }
+
+}
diff --git a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/enums/DictTypeConstants.java b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/enums/DictTypeConstants.java
index c006386..b90dc55 100644
--- a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/enums/DictTypeConstants.java
+++ b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/enums/DictTypeConstants.java
@@ -7,4 +7,6 @@ package cn.iocoder.yudao.module.bpm.enums;
  */
 public interface DictTypeConstants {
 
+    String COMMENT_TYPE = "bpm_comment_type";
+
 }
diff --git a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/enums/task/BpmCommentTypeEnum.java b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/enums/task/BpmCommentTypeEnum.java
index 8b7b7ce..3eda5f9 100644
--- a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/enums/task/BpmCommentTypeEnum.java
+++ b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/enums/task/BpmCommentTypeEnum.java
@@ -13,6 +13,7 @@ import lombok.Getter;
 @AllArgsConstructor
 public enum BpmCommentTypeEnum {
 
+    COMMENT("0", "评论", "{}"),
     APPROVE("1", "审批通过", "审批通过，原因是：{}"),
     REJECT("2", "不通过", "审批不通过：原因是：{}"),
     CANCEL("3", "已取消", "系统自动取消，原因是：{}"),
@@ -40,7 +41,7 @@ public enum BpmCommentTypeEnum {
     private final String comment;
 
     public String formatComment(Object... params) {
-         return StrUtil.format(comment, params);
+        return StrUtil.format(comment, params);
     }
 
 }
diff --git a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/service/comment/BpmCommentService.java b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/service/comment/BpmCommentService.java
new file mode 100644
index 0000000..1eb75e8
--- /dev/null
+++ b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/service/comment/BpmCommentService.java
@@ -0,0 +1,42 @@
+package cn.iocoder.yudao.module.bpm.service.comment;
+
+import cn.iocoder.yudao.module.bpm.controller.admin.comment.vo.BpmCommentCreateReqVO;
+import cn.iocoder.yudao.module.bpm.enums.task.BpmCommentTypeEnum;
+import jakarta.validation.Valid;
+import org.flowable.engine.task.Comment;
+
+import java.util.List;
+
+/**
+ * 流程评论 Service 接口
+ *
+ * @author 芋道源码
+ */
+public interface BpmCommentService {
+
+    /**
+     * 获得指定流程实例的评论列表
+     *
+     * @param processInstanceId 流程实例的编号
+     * @return 评论列表
+     */
+    List<Comment> getCommentListByProcessInstanceId(String processInstanceId);
+
+    /**
+     * 创建流程评论
+     *
+     * @param reqVO 评论请求
+     */
+    void createComment(@Valid BpmCommentCreateReqVO reqVO);
+
+    /**
+     * 创建流程评论
+     *
+     * @param taskId            任务编号
+     * @param processInstanceId 流程实例编号
+     * @param type              评论类型
+     * @param params            评论模板参数
+     */
+    void createComment(String taskId, String processInstanceId, BpmCommentTypeEnum type, Object... params);
+
+}
diff --git a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/service/comment/BpmCommentServiceImpl.java b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/service/comment/BpmCommentServiceImpl.java
new file mode 100644
index 0000000..2082a6d
--- /dev/null
+++ b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/service/comment/BpmCommentServiceImpl.java
@@ -0,0 +1,48 @@
+package cn.iocoder.yudao.module.bpm.service.comment;
+
+import cn.iocoder.yudao.module.bpm.controller.admin.comment.vo.BpmCommentCreateReqVO;
+import cn.iocoder.yudao.module.bpm.enums.task.BpmCommentTypeEnum;
+import cn.iocoder.yudao.module.bpm.service.task.BpmTaskService;
+import jakarta.annotation.Resource;
+import jakarta.validation.Valid;
+import org.flowable.engine.TaskService;
+import org.flowable.engine.task.Comment;
+import org.flowable.task.api.Task;
+import org.springframework.context.annotation.Lazy;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+/**
+ * 流程评论 Service 实现类
+ *
+ * @author 芋道源码
+ */
+@Service
+public class BpmCommentServiceImpl implements BpmCommentService {
+
+    @Resource
+    private TaskService taskService;
+    @Resource
+    @Lazy // 延迟加载，避免循环依赖
+    private BpmTaskService bpmTaskService;
+
+    @Override
+    public List<Comment> getCommentListByProcessInstanceId(String processInstanceId) {
+        return taskService.getProcessInstanceComments(processInstanceId);
+    }
+
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public void createComment(@Valid BpmCommentCreateReqVO reqVO) {
+        Task task = bpmTaskService.validateTaskExists(reqVO.getTaskId());
+        createComment(task.getId(), task.getProcessInstanceId(), BpmCommentTypeEnum.COMMENT, reqVO.getMessage());
+    }
+
+    @Override
+    public void createComment(String taskId, String processInstanceId, BpmCommentTypeEnum type, Object... params) {
+        taskService.addComment(taskId, processInstanceId, type.getType(), type.formatComment(params));
+    }
+
+}
diff --git a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmTaskService.java b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmTaskService.java
index 36a35b3..0e3ecfa 100644
--- a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmTaskService.java
+++ b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmTaskService.java
@@ -104,6 +104,14 @@ public interface BpmTaskService {
     Task validateTask(Long userId, String taskId);
 
     /**
+     * 校验任务是否存在
+     *
+     * @param id 任务编号
+     * @return 任务
+     */
+    Task validateTaskExists(String id);
+
+    /**
      * 获取任务
      *
      * @param id 任务编号
@@ -128,6 +136,16 @@ public interface BpmTaskService {
     List<HistoricTaskInstance> getHistoricTasks(Collection<String> taskIds);
 
     /**
+     * 获取历史任务 Map
+     *
+     * @param taskIds 任务编号集合
+     * @return 历史任务 Map
+     */
+    default Map<String, HistoricTaskInstance> getHistoricTaskMap(Collection<String> taskIds) {
+        return CollectionUtils.convertMap(getHistoricTasks(taskIds), HistoricTaskInstance::getId);
+    }
+
+    /**
      * 根据条件查询正在进行中的任务
      *
      * @param processInstanceId 流程实例编号，不允许为空
diff --git a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmTaskServiceImpl.java b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmTaskServiceImpl.java
index 73f8a01..5b8aa4a 100644
--- a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmTaskServiceImpl.java
+++ b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmTaskServiceImpl.java
@@ -27,6 +27,7 @@ import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnVariableCon
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmHttpRequestUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmnModelUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
+import cn.iocoder.yudao.module.bpm.service.comment.BpmCommentService;
 import cn.iocoder.yudao.module.bpm.service.definition.BpmFormService;
 import cn.iocoder.yudao.module.bpm.service.definition.BpmModelService;
 import cn.iocoder.yudao.module.bpm.service.definition.BpmProcessDefinitionService;
@@ -57,6 +58,7 @@ import org.flowable.task.api.history.HistoricTaskInstance;
 import org.flowable.task.api.history.HistoricTaskInstanceQuery;
 import org.flowable.task.service.impl.persistence.entity.TaskEntity;
 import org.flowable.task.service.impl.persistence.entity.TaskEntityImpl;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.transaction.support.TransactionSynchronization;
@@ -97,6 +99,9 @@ public class BpmTaskServiceImpl implements BpmTaskService {
     @Resource
     private BpmProcessInstanceCopyService processInstanceCopyService;
     @Resource
+    @Lazy // 延迟加载，避免循环依赖
+    private BpmCommentService commentService;
+    @Resource
     private BpmModelService modelService;
     @Resource
     private BpmMessageService messageService;
@@ -310,7 +315,7 @@ public class BpmTaskServiceImpl implements BpmTaskService {
 
     @Override
     public Task validateTask(Long userId, String taskId) {
-        Task task = validateTaskExist(taskId);
+        Task task = validateTaskExists(taskId);
         // 为什么判断 assignee 非空的情况下？
         // 例如说：在审批人为空时，我们会有“自动审批通过”的策略，此时 userId 为 null，允许通过
         if (StrUtil.isNotBlank(task.getAssignee())
@@ -320,7 +325,8 @@ public class BpmTaskServiceImpl implements BpmTaskService {
         return task;
     }
 
-    private Task validateTaskExist(String id) {
+    @Override
+    public Task validateTaskExists(String id) {
         Task task = getTask(id);
         if (task == null) {
             throw exception(TASK_NOT_EXISTS);
@@ -340,6 +346,9 @@ public class BpmTaskServiceImpl implements BpmTaskService {
 
     @Override
     public List<HistoricTaskInstance> getHistoricTasks(Collection<String> taskIds) {
+        if (CollUtil.isEmpty(taskIds)) {
+            return Collections.emptyList();
+        }
         return historyService.createHistoricTaskInstanceQuery().taskIds(taskIds).includeTaskLocalVariables().list();
     }
 
@@ -362,7 +371,7 @@ public class BpmTaskServiceImpl implements BpmTaskService {
     @Override
     public List<UserTask> getUserTaskListByReturn(String id) {
         // 1.1 校验当前任务 task 存在
-        Task task = validateTaskExist(id);
+        Task task = validateTaskExists(id);
         // 1.2 根据流程定义获取流程模型信息
         BpmnModel bpmnModel = modelService.getBpmnModelByDefinitionId(task.getProcessDefinitionId());
         FlowElement source = BpmnModelUtils.getFlowElementById(bpmnModel, task.getTaskDefinitionKey());
@@ -602,8 +611,8 @@ public class BpmTaskServiceImpl implements BpmTaskService {
             taskService.setVariableLocal(task.getId(), BpmnVariableConstants.TASK_SIGN_PIC_URL, reqVO.getSignPicUrl());
         }
         // 2.2 添加评论
-        taskService.addComment(task.getId(), task.getProcessInstanceId(), BpmCommentTypeEnum.APPROVE.getType(),
-                BpmCommentTypeEnum.APPROVE.formatComment(reqVO.getReason()));
+        commentService.createComment(task.getId(), task.getProcessInstanceId(), BpmCommentTypeEnum.APPROVE,
+                reqVO.getReason());
         // 2.3 添加附件
         if (CollUtil.isNotEmpty(reqVO.getAttachments())) {
             reqVO.getAttachments().forEach(attachment -> taskService.createAttachment(BpmAttachmentTypeEnum.TASK_ATTACHMENT.getType(),
@@ -767,7 +776,7 @@ public class BpmTaskServiceImpl implements BpmTaskService {
             return;
         }
         // 1.2 只处理加签的父任务
-        Task parentTask = validateTaskExist(parentTaskId);
+        Task parentTask = validateTaskExists(parentTaskId);
         String scopeType = parentTask.getScopeType();
         if (BpmTaskSignTypeEnum.of(scopeType) == null) {
             return;
@@ -812,8 +821,8 @@ public class BpmTaskServiceImpl implements BpmTaskService {
         AdminUserRespDTO currentUser = adminUserApi.getUser(WebFrameworkUtils.getLoginUserId());
         AdminUserRespDTO ownerUser = adminUserApi.getUser(NumberUtils.parseLong(task.getOwner())); // 发起委托的用户
         Assert.notNull(ownerUser, "委派任务找不到原审批人，需要检查数据");
-        taskService.addComment(reqVO.getId(), task.getProcessInstanceId(), BpmCommentTypeEnum.DELEGATE_END.getType(),
-                BpmCommentTypeEnum.DELEGATE_END.formatComment(currentUser.getNickname(), ownerUser.getNickname(), reqVO.getReason()));
+        commentService.createComment(reqVO.getId(), task.getProcessInstanceId(), BpmCommentTypeEnum.DELEGATE_END,
+                currentUser.getNickname(), ownerUser.getNickname(), reqVO.getReason());
 
         // 2.1 调用 resolveTask 完成任务。
         // 底层调用 TaskHelper.changeTaskAssignee(task, task.getOwner())：将 owner 设置为 assignee
@@ -837,8 +846,8 @@ public class BpmTaskServiceImpl implements BpmTaskService {
         // 2.1 更新流程任务为不通过
         updateTaskStatusAndReason(task.getId(), BpmTaskStatusEnum.REJECT.getStatus(), reqVO.getReason());
         // 2.2 添加流程评论
-        taskService.addComment(task.getId(), task.getProcessInstanceId(), BpmCommentTypeEnum.REJECT.getType(),
-                BpmCommentTypeEnum.REJECT.formatComment(reqVO.getReason()));
+        commentService.createComment(task.getId(), task.getProcessInstanceId(), BpmCommentTypeEnum.REJECT,
+                reqVO.getReason());
         // 2.3 添加附件
         if (CollUtil.isNotEmpty(reqVO.getAttachments())) {
             reqVO.getAttachments().forEach(attachment -> taskService.createAttachment(BpmAttachmentTypeEnum.TASK_ATTACHMENT.getType(),
@@ -852,8 +861,8 @@ public class BpmTaskServiceImpl implements BpmTaskService {
             String rootParentId = getTaskRootParentId(task);
             updateTaskStatusAndReason(rootParentId, BpmTaskStatusEnum.REJECT.getStatus(),
                     BpmCommentTypeEnum.REJECT.formatComment("加签任务不通过"));
-            taskService.addComment(rootParentId, task.getProcessInstanceId(), BpmCommentTypeEnum.REJECT.getType(),
-                    BpmCommentTypeEnum.REJECT.formatComment("加签任务不通过"));
+            commentService.createComment(rootParentId, task.getProcessInstanceId(), BpmCommentTypeEnum.REJECT,
+                    "加签任务不通过");
         }
 
         // 3. 根据不同的 RejectHandler 处理策略
@@ -966,8 +975,8 @@ public class BpmTaskServiceImpl implements BpmTaskService {
             // 判断是否分配给自己任务，因为会签任务，一个节点会有多个任务
             if (isAssignUserTask(userId, task)) { // 情况一：自己的任务，进行 RETURN 标记
                 // 2.1.1 添加评论
-                taskService.addComment(task.getId(), currentTask.getProcessInstanceId(), BpmCommentTypeEnum.RETURN.getType(),
-                        BpmCommentTypeEnum.RETURN.formatComment(reqVO.getReason()));
+                commentService.createComment(task.getId(), currentTask.getProcessInstanceId(), BpmCommentTypeEnum.RETURN,
+                        reqVO.getReason());
                 // 2.1.2 更新 task 状态 + 原因
                 updateTaskStatusAndReason(task.getId(), BpmTaskStatusEnum.RETURN.getStatus(), reqVO.getReason());
             } else { // 情况二：别人的任务，进行 CANCEL 标记
@@ -1045,8 +1054,8 @@ public class BpmTaskServiceImpl implements BpmTaskService {
 
         // 2. 添加委托意见
         AdminUserRespDTO currentUser = adminUserApi.getUser(userId);
-        taskService.addComment(taskId, task.getProcessInstanceId(), BpmCommentTypeEnum.DELEGATE_START.getType(),
-                BpmCommentTypeEnum.DELEGATE_START.formatComment(currentUser.getNickname(), delegateUser.getNickname(), reqVO.getReason()));
+        commentService.createComment(taskId, task.getProcessInstanceId(), BpmCommentTypeEnum.DELEGATE_START,
+                currentUser.getNickname(), delegateUser.getNickname(), reqVO.getReason());
 
         // 3.1 设置任务所有人 (owner) 为原任务的处理人 (assignee)
         // 特殊：如果已经被委派（owner 非空），则不需要更新 owner：https://gitee.com/zhijiantianya/yudao-cloud/issues/ICJ153
@@ -1076,8 +1085,8 @@ public class BpmTaskServiceImpl implements BpmTaskService {
 
         // 2. 添加委托意见
         AdminUserRespDTO currentUser = adminUserApi.getUser(userId);
-        taskService.addComment(taskId, task.getProcessInstanceId(), BpmCommentTypeEnum.TRANSFER.getType(),
-                BpmCommentTypeEnum.TRANSFER.formatComment(currentUser.getNickname(), assigneeUser.getNickname(), reqVO.getReason()));
+        commentService.createComment(taskId, task.getProcessInstanceId(), BpmCommentTypeEnum.TRANSFER,
+                currentUser.getNickname(), assigneeUser.getNickname(), reqVO.getReason());
 
         // 3.1 设置任务所有人 (owner) 为原任务的处理人 (assignee)
         // 特殊：如果已经被转派（owner 非空），则不需要更新 owner：https://gitee.com/zhijiantianya/yudao-cloud/issues/ICJ153
@@ -1162,10 +1171,9 @@ public class BpmTaskServiceImpl implements BpmTaskService {
 
         // 4. 记录加签的评论到 task 任务
         AdminUserRespDTO currentUser = adminUserApi.getUser(userId);
-        String comment = StrUtil.format(BpmCommentTypeEnum.ADD_SIGN.getComment(),
+        commentService.createComment(reqVO.getId(), taskEntity.getProcessInstanceId(), BpmCommentTypeEnum.ADD_SIGN,
                 currentUser.getNickname(), BpmTaskSignTypeEnum.nameOfType(reqVO.getType()),
                 String.join(",", convertList(userList, AdminUserRespDTO::getNickname)), reqVO.getReason());
-        taskService.addComment(reqVO.getId(), taskEntity.getProcessInstanceId(), BpmCommentTypeEnum.ADD_SIGN.getType(), comment);
     }
 
     /**
@@ -1273,8 +1281,8 @@ public class BpmTaskServiceImpl implements BpmTaskService {
 
         // 3. 记录日志到父任务中。先记录日志是因为，通过 handleParentTask 方法之后，任务可能被完成了，并且不存在了，会报异常，所以先记录
         AdminUserRespDTO user = adminUserApi.getUser(userId);
-        taskService.addComment(task.getParentTaskId(), task.getProcessInstanceId(), BpmCommentTypeEnum.SUB_SIGN.getType(),
-                StrUtil.format(BpmCommentTypeEnum.SUB_SIGN.getComment(), user.getNickname(), cancelUser.getNickname()));
+        commentService.createComment(task.getParentTaskId(), task.getProcessInstanceId(), BpmCommentTypeEnum.SUB_SIGN,
+                user.getNickname(), cancelUser.getNickname());
 
         // 4. 处理当前任务的父任务
         handleParentTaskIfSign(task.getParentTaskId());
@@ -1331,8 +1339,8 @@ public class BpmTaskServiceImpl implements BpmTaskService {
         List<String> withdrawExecutionIds = new ArrayList<>();
         for (Task task : runningTasks) {
             // 标记撤回任务为取消
-            taskService.addComment(task.getId(), taskInstance.getProcessInstanceId(), BpmCommentTypeEnum.CANCEL.getType(),
-                    BpmCommentTypeEnum.CANCEL.formatComment("前一节点撤回"));
+            commentService.createComment(task.getId(), taskInstance.getProcessInstanceId(), BpmCommentTypeEnum.CANCEL,
+                    "前一节点撤回");
             updateTaskStatusAndReason(task.getId(), BpmTaskStatusEnum.CANCEL.getStatus(), BpmReasonEnum.CANCEL_BY_WITHDRAW.getReason());
             withdrawExecutionIds.add(task.getExecutionId());
         }
@@ -1350,7 +1358,7 @@ public class BpmTaskServiceImpl implements BpmTaskService {
      * @return 任务信息
      */
     private Task validateTaskCanSignDelete(String id) {
-        Task task = validateTaskExist(id);
+        Task task = validateTaskExists(id);
         if (task.getParentTaskId() == null) {
             throw exception(TASK_SIGN_DELETE_NO_PARENT);
         }
@@ -1468,7 +1476,7 @@ public class BpmTaskServiceImpl implements BpmTaskService {
             return;
         }
         updateTaskStatusAndReason(taskId, BpmTaskStatusEnum.CANCEL.getStatus(), BpmReasonEnum.CANCEL_BY_SYSTEM.getReason());
-        // 补充说明：由于 Task 被删除成 HistoricTask 后，无法通过 taskService.addComment 添加理由，所以无法存储具体的取消理由
+        // 补充说明：由于 Task 被删除成 HistoricTask 后，无法通过 Flowable Comment 添加理由，所以无法存储具体的取消理由
     }
 
     @Override