diff --git a/src/main/java/com/gaotao/modules/automatedWarehouse/mapper/WcsIntegrationMapper.java b/src/main/java/com/gaotao/modules/automatedWarehouse/mapper/WcsIntegrationMapper.java
index 0b3ce71..64bf98d 100644
--- a/src/main/java/com/gaotao/modules/automatedWarehouse/mapper/WcsIntegrationMapper.java
+++ b/src/main/java/com/gaotao/modules/automatedWarehouse/mapper/WcsIntegrationMapper.java
@@ -796,6 +796,16 @@ public interface WcsIntegrationMapper {
      */
     int checkPalletTaskExists(@Param("site") String site, @Param("palletId") String palletId, @Param("sourceBillNo") String sourceBillNo, @Param("stationCode") String stationCode);
     
+    /**
+     * @Description 查询栈板是否存在未完成的运输任务 - rqrq
+     * @param site 工厂编码
+     * @param palletId 栈板编码
+     * @return 未完成任务的任务编号（如果存在），不存在则返回null
+     * @author rqrq
+     * @date 2025/10/31
+     */
+    String getUnfinishedTaskByPalletId(@Param("site") String site, @Param("palletId") String palletId);
+    
     /**
      * @Description 检查栈板是否放满（根据pallet_type_area的点位数和max_layer判断） - rqrq
      * @param site 工厂编码
diff --git a/src/main/java/com/gaotao/modules/automatedWarehouse/service/impl/AutoTaskServiceImpl.java b/src/main/java/com/gaotao/modules/automatedWarehouse/service/impl/AutoTaskServiceImpl.java
index 944a214..fb5a093 100644
--- a/src/main/java/com/gaotao/modules/automatedWarehouse/service/impl/AutoTaskServiceImpl.java
+++ b/src/main/java/com/gaotao/modules/automatedWarehouse/service/impl/AutoTaskServiceImpl.java
@@ -62,6 +62,18 @@ public class AutoTaskServiceImpl implements AutoTaskService {
         if(getAgvStationStatus!=0){
             throw new RuntimeException("参数验证失败：站点不是空闲状态");
         }
+        
+        // 如果指定了栈板，验证栈板是否已有未完成任务 - rqrq
+        if(StringUtils.hasText(inData.getPalletId())){
+            String unfinishedTaskNo = wcsIntegrationMapper.getUnfinishedTaskByPalletId(
+                inData.getSite(), 
+                inData.getPalletId()
+            );
+            if(StringUtils.hasText(unfinishedTaskNo)){
+                throw new RuntimeException("栈板【" + inData.getPalletId() + "】已存在未完成的运输任务【" + unfinishedTaskNo + "】，不能重复创建");
+            }
+        }
+        
         // 生成运输任务编号
         TransNoControl transData = transNoService.getTransNo(inData.getSite(), "WTT", 10);
         Date currentTime = new Date();
@@ -321,6 +333,15 @@ public class AutoTaskServiceImpl implements AutoTaskService {
             throw new RuntimeException("栈板状态异常：栈板正在被调用中，无法创建新任务");
         }
         
+        // 验证栈板是否已有未完成任务（更严格的检查）- rqrq
+        String unfinishedTaskNo = wcsIntegrationMapper.getUnfinishedTaskByPalletId(
+            inData.getSite(), 
+            inData.getPalletId()
+        );
+        if(StringUtils.hasText(unfinishedTaskNo)){
+            throw new RuntimeException("栈板【" + inData.getPalletId() + "】已存在未完成的运输任务【" + unfinishedTaskNo + "】，不能重复创建");
+        }
+        
         // 校验栈板是否在当前站点上 - rqrq
         if(!inData.getFromLocation().equals(pallet.getLocationCode())){
             throw new RuntimeException("栈板位置异常：栈板不在指定的起始站点【" + inData.getFromLocation() + "】上，实际位置为【" + pallet.getLocationCode() + "】");
diff --git a/src/main/resources/mapper/automatedWarehouse/WcsIntegrationMapper.xml b/src/main/resources/mapper/automatedWarehouse/WcsIntegrationMapper.xml
index de6d312..8f47827 100644
--- a/src/main/resources/mapper/automatedWarehouse/WcsIntegrationMapper.xml
+++ b/src/main/resources/mapper/automatedWarehouse/WcsIntegrationMapper.xml
@@ -1543,6 +1543,17 @@
           AND to_location = #{stationCode}
     </select>
     
+    <!-- rqrq - 查询栈板是否存在未完成的运输任务 -->
+    <select id="getUnfinishedTaskByPalletId" resultType="string">
+        SELECT TOP 1 task_no
+        FROM wms_transport_task
+        WHERE site = #{site}
+          AND pallet_id = #{palletId}
+          AND status != '已完成'
+          AND status != '已取消'
+        ORDER BY created_time DESC
+    </select>
+    
     <!-- rqrq - 检查栈板是否放满（根据pallet_type_area的点位数和max_layer判断） -->
     <select id="checkPalletIsFull" resultType="int">
         WITH PalletInfo AS (