diff --git a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/definition/vo/form/BpmFormFieldVO.java b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/definition/vo/form/BpmFormFieldVO.java
index 65fb305..eff2a2a 100644
--- a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/definition/vo/form/BpmFormFieldVO.java
+++ b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/definition/vo/form/BpmFormFieldVO.java
@@ -2,6 +2,8 @@ package cn.iocoder.yudao.module.bpm.controller.admin.definition.vo.form;
 
 import lombok.Data;
 
+import java.util.List;
+
 /**
  * 流程表单字段 VO
  */
@@ -20,5 +22,9 @@ public class BpmFormFieldVO {
      * 字段标题
      */
     private String title;
+    /**
+     * 子表单字段（处理布局组件）
+     */
+    private List<BpmFormFieldVO> children;
 
 }
diff --git a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/enums/definition/BpmConditionOpCodeEnum.java b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/enums/definition/BpmConditionOpCodeEnum.java
new file mode 100644
index 0000000..71fc8ae
--- /dev/null
+++ b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/enums/definition/BpmConditionOpCodeEnum.java
@@ -0,0 +1,36 @@
+package cn.iocoder.yudao.module.bpm.enums.definition;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+/**
+ * BPM 条件表达式操作符枚举
+ *
+ * @author Lesan
+ */
+@RequiredArgsConstructor
+@Getter
+public enum BpmConditionOpCodeEnum {
+    EQ("==", "等于", " var:getOrDefault(%s, null) == %s "),
+    NE("!=", "不等于", " var:getOrDefault(%s, null) != %s "),
+    GT(">", "大于", " var:getOrDefault(%s, null) > %s "),
+    GE(">=", "大于等于", " var:getOrDefault(%s, null) >= %s "),
+    LT("<", "小于", " var:getOrDefault(%s, null) < %s "),
+    LE("<=", "小于等于", " var:getOrDefault(%s, null) <= %s "),
+    CONTAINS("contain", "包含", " var:contains(%s, %s) "),
+    NOT_CONTAINS("!contain", "不包含", " !var:contains(%s, %s) ");
+
+    private final String code;
+    private final String des;
+    private final String symbol;
+
+    public static BpmConditionOpCodeEnum fromCode(String code) {
+        for (BpmConditionOpCodeEnum op : BpmConditionOpCodeEnum.values()) {
+            if (op.code.equalsIgnoreCase(code)) {
+                return op;
+            }
+        }
+        throw new IllegalArgumentException("未知操作符: " + code);
+    }
+
+}
diff --git a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/FlowableUtils.java b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/FlowableUtils.java
index 67c24bb..b9c3d72 100644
--- a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/FlowableUtils.java
+++ b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/FlowableUtils.java
@@ -2,6 +2,7 @@ package cn.iocoder.yudao.module.bpm.framework.flowable.core.util;
 
 import cn.hutool.core.map.MapUtil;
 import cn.hutool.core.util.ObjectUtil;
+import cn.hutool.core.util.StrUtil;
 import cn.hutool.extra.spring.SpringUtil;
 import cn.iocoder.yudao.framework.common.core.KeyValue;
 import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
@@ -247,9 +248,7 @@ public class FlowableUtils {
         Map<String, BpmFormFieldVO> formFieldsMap = new HashMap<>();
         processDefinitionInfo.getFormFields().forEach(formFieldStr -> {
             BpmFormFieldVO formField = JsonUtils.parseObject(formFieldStr, BpmFormFieldVO.class);
-            if (formField != null) {
-                formFieldsMap.put(formField.getField(), formField);
-            }
+            parseFormField(formField, formFieldsMap);
         });
 
         // 情况一：当自定义了摘要
@@ -273,6 +272,30 @@ public class FlowableUtils {
                 .collect(Collectors.toList());
     }
 
+    /**
+     * 递归解析表单字段
+     */
+    private static void parseFormField(BpmFormFieldVO formField,
+                                       Map<String, BpmFormFieldVO> formFieldsMap) {
+
+        if (formField == null) {
+            return;
+        }
+
+        // 如果存在 children -> 说明是布局组件
+        if (formField.getChildren() != null && !formField.getChildren().isEmpty()) {
+            for (BpmFormFieldVO child : formField.getChildren()) {
+                parseFormField(child, formFieldsMap);
+            }
+            return;
+        }
+
+        // 真实字段才加入 map
+        if (StrUtil.isNotBlank(formField.getField())) {
+            formFieldsMap.put(formField.getField(), formField);
+        }
+    }
+
     // ========== Task 相关的工具方法 ==========
 
     /**
diff --git a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/SimpleModelUtils.java b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/SimpleModelUtils.java
index cfeb2c2..f11ab26 100644
--- a/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/SimpleModelUtils.java
+++ b/yudao-module-bpm/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/SimpleModelUtils.java
@@ -705,12 +705,12 @@ public class SimpleModelUtils {
                 }
                 // 构造规则表达式
                 List<String> list = convertList(item.getRules(), (rule) -> {
+                    // TODO @芋艿：官方文档中无convertByType方法，https://flowable.me/blog/2025/04/02/back-end-expressions/
                     String rightSide = NumberUtil.isNumber(rule.getRightSide()) ? rule.getRightSide()
                             : "\"" + rule.getRightSide() + "\""; // 如果非数值类型加引号
-                    return String.format(" vars:getOrDefault(%s, null) %s var:convertByType(%s,%s) ",
+                    return String.format(BpmConditionOpCodeEnum.fromCode(rule.getOpCode()).getSymbol(),
                             rule.getLeftSide(), // 左侧：读取变量
-                            rule.getOpCode(), // 中间：操作符，比较
-                            rule.getLeftSide(), rightSide); // 右侧：转换变量，VariableConvertByTypeExpressionFunction
+                            rightSide); // 右侧：取值变量
                 });
                 // 构造条件组的表达式
                 Boolean and = item.getAnd();