diff --git a/yudao-module-erp/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/vo/in/ErpPurchaseInSaveReqVO.java b/yudao-module-erp/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/vo/in/ErpPurchaseInSaveReqVO.java
index 80edeec..ba2feb3 100644
--- a/yudao-module-erp/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/vo/in/ErpPurchaseInSaveReqVO.java
+++ b/yudao-module-erp/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/purchase/vo/in/ErpPurchaseInSaveReqVO.java
@@ -1,6 +1,8 @@
 package cn.iocoder.yudao.module.erp.controller.admin.purchase.vo.in;
 
 import io.swagger.v3.oas.annotations.media.Schema;
+import jakarta.validation.Valid;
+import jakarta.validation.constraints.DecimalMin;
 import jakarta.validation.constraints.NotNull;
 import lombok.Data;
 
@@ -39,6 +41,7 @@ public class ErpPurchaseInSaveReqVO {
     private String remark;
 
     @Schema(description = "入库清单列表")
+    @Valid
     private List<Item> items;
 
     @Data
@@ -68,6 +71,7 @@ public class ErpPurchaseInSaveReqVO {
 
         @Schema(description = "产品数量", requiredMode = Schema.RequiredMode.REQUIRED, example = "100.00")
         @NotNull(message = "产品数量不能为空")
+        @DecimalMin(value = "0", inclusive = false, message = "产品数量必须大于 0")
         private BigDecimal count;
 
         @Schema(description = "税率，百分比", example = "99.88")
diff --git a/yudao-module-erp/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/stock/ErpStockMapper.java b/yudao-module-erp/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/stock/ErpStockMapper.java
index 63ff1ca..75d1671 100644
--- a/yudao-module-erp/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/stock/ErpStockMapper.java
+++ b/yudao-module-erp/src/main/java/cn/iocoder/yudao/module/erp/dal/mysql/stock/ErpStockMapper.java
@@ -36,6 +36,10 @@ public interface ErpStockMapper extends BaseMapperX<ErpStockDO> {
     }
 
     default int updateCountIncrement(Long id, BigDecimal count, boolean negativeEnable) {
+        // 数量为 0 无库存增量（历史脏数据防护）：直接跳过，避免生成空 SET 的 UPDATE 抛异常 500
+        if (count.compareTo(BigDecimal.ZERO) == 0) {
+            return 0;
+        }
         LambdaUpdateWrapper<ErpStockDO> updateWrapper = new LambdaUpdateWrapper<ErpStockDO>()
                 .eq(ErpStockDO::getId, id);
         if (count.compareTo(BigDecimal.ZERO) > 0) {