diff --git a/nl-module-task/nl-module-task-api/src/main/java/cn/code/nl/module/task/api/TransportTaskApi.java b/nl-module-task/nl-module-task-api/src/main/java/cn/code/nl/module/task/api/TransportTaskApi.java
index 7c446a98..44ba34a1 100644
--- a/nl-module-task/nl-module-task-api/src/main/java/cn/code/nl/module/task/api/TransportTaskApi.java
+++ b/nl-module-task/nl-module-task-api/src/main/java/cn/code/nl/module/task/api/TransportTaskApi.java
@@ -51,6 +51,12 @@ public interface TransportTaskApi {
     @Operation(summary = "根据 taskCode 查询任务")
     CommonResult<TaskInfoDTO> getTaskByCode(@RequestParam("taskCode") String taskCode);
 
+    @GetMapping(PREFIX + "/getUnfinishedTaskByBiz")
+    @Operation(summary = "根据业务标识查询未完成任务")
+    CommonResult<TaskInfoDTO> getUnfinishedTaskByBiz(@RequestParam("ownerService") String ownerService,
+                                                     @RequestParam("bizType") String bizType,
+                                                     @RequestParam("bizId") String bizId);
+
     @GetMapping(PREFIX + "/getRunningTaskByMaterialId")
     @Operation(summary = "根据 materialId 和 ownerService 查询运行中任务")
     CommonResult<List<TaskInfoDTO>> getRunningTaskByMaterialId(@RequestParam("materialId") Long materialId,
diff --git a/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/api/TransportTaskApiImpl.java b/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/api/TransportTaskApiImpl.java
index 178eaa32..e669265e 100644
--- a/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/api/TransportTaskApiImpl.java
+++ b/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/api/TransportTaskApiImpl.java
@@ -60,6 +60,11 @@ public class TransportTaskApiImpl implements TransportTaskApi {
         return success(transportTaskService.getTaskInfoByCode(taskCode));
     }
 
+    @Override
+    public CommonResult<TaskInfoDTO> getUnfinishedTaskByBiz(String ownerService, String bizType, String bizId) {
+        return success(transportTaskService.getUnfinishedTaskInfoByBiz(ownerService, bizType, bizId));
+    }
+
     @Override
     public CommonResult<List<TaskInfoDTO>> getRunningTaskByMaterialId(Long materialId, String ownerService) {
         return success(transportTaskService.getRunningTaskInfoByMaterialId(materialId, ownerService));
diff --git a/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/dal/mysql/transporttask/TransportTaskMapper.java b/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/dal/mysql/transporttask/TransportTaskMapper.java
index b276a568..c5f268f9 100644
--- a/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/dal/mysql/transporttask/TransportTaskMapper.java
+++ b/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/dal/mysql/transporttask/TransportTaskMapper.java
@@ -80,8 +80,9 @@ public interface TransportTaskMapper extends BaseMapperX<TransportTaskDO> {
     /**
      * 按业务归属查询未完结任务（幂等校验用）
      */
-    default TransportTaskDO selectUnfinishedByBiz(String bizType, String bizId) {
+    default TransportTaskDO selectUnfinishedByBiz(String ownerService, String bizType, String bizId) {
         return selectOne(new LambdaQueryWrapperX<TransportTaskDO>()
+                .eq(TransportTaskDO::getOwnerService, ownerService)
                 .eq(TransportTaskDO::getBizType, bizType)
                 .eq(TransportTaskDO::getBizId, bizId)
                 .lt(TransportTaskDO::getTaskStatus, TransportTaskStatusEnum.FINISHED_CALLBACK_PENDING.getCode()));
diff --git a/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/service/transporttask/TransportTaskService.java b/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/service/transporttask/TransportTaskService.java
index ddb09fb7..057bce9e 100644
--- a/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/service/transporttask/TransportTaskService.java
+++ b/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/service/transporttask/TransportTaskService.java
@@ -105,6 +105,16 @@ public interface TransportTaskService {
      */
     TaskInfoDTO getTaskInfoByCode(String taskCode);
 
+    /**
+     * 根据业务标识查询未完成任务。
+     *
+     * @param ownerService 业务归属服务
+     * @param bizType 业务类型
+     * @param bizId 业务标识
+     * @return 未完成任务，不存在时返回空
+     */
+    TaskInfoDTO getUnfinishedTaskInfoByBiz(String ownerService, String bizType, String bizId);
+
     /**
      * 根据物料ID和业务归属查询运行中任务（状态小于75）
      *
diff --git a/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/service/transporttask/TransportTaskServiceImpl.java b/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/service/transporttask/TransportTaskServiceImpl.java
index d46659ec..24178698 100644
--- a/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/service/transporttask/TransportTaskServiceImpl.java
+++ b/nl-module-task/nl-module-task-server/src/main/java/cn/code/nl/module/task/service/transporttask/TransportTaskServiceImpl.java
@@ -32,6 +32,8 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.validation.annotation.Validated;
+import org.redisson.api.RLock;
+import org.redisson.api.RedissonClient;
 
 import java.util.List;
 
@@ -49,6 +51,8 @@ import static cn.code.nl.module.task.enums.ErrorCodeConstants.*;
 @Validated
 public class TransportTaskServiceImpl implements TransportTaskService {
 
+    private static final String TASK_BIZ_CREATE_LOCK_KEY = "task:biz:create:";
+
     @Resource
     private TransportTaskMapper transportTaskMapper;
 
@@ -67,6 +71,9 @@ public class TransportTaskServiceImpl implements TransportTaskService {
     @Resource
     private CodeGenApi codeGenApi;
 
+    @Resource
+    private RedissonClient redissonClient;
+
     @Override
     public Long createTransportTask(TransportTaskSaveReqVO createReqVO) {
         TransportTaskDO transportTask = BeanUtils.toBean(createReqVO, TransportTaskDO.class);
@@ -80,6 +87,31 @@ public class TransportTaskServiceImpl implements TransportTaskService {
             bizNo = "{{#_ret}}",
             success = TASK_INFO_CREATE_BY_RPC)
     public Long createTransportTaskByRpc(TransportTaskCreateReqDTO reqDTO) {
+        if (StrUtil.isBlank(reqDTO.getOwnerService()) || StrUtil.isBlank(reqDTO.getBizType())
+                || StrUtil.isBlank(reqDTO.getBizId())) {
+            return insertTransportTaskByRpc(reqDTO);
+        }
+        String lockKey = TASK_BIZ_CREATE_LOCK_KEY + reqDTO.getOwnerService() + ":"
+                + reqDTO.getBizType() + ":" + reqDTO.getBizId();
+        RLock lock = redissonClient.getLock(lockKey);
+        lock.lock();
+        try {
+            if (transportTaskMapper.selectUnfinishedByBiz(reqDTO.getOwnerService(),
+                    reqDTO.getBizType(), reqDTO.getBizId()) != null) {
+                throw exception(TRANSPORT_TASK_EXISTS_UNFINISHED);
+            }
+            return insertTransportTaskByRpc(reqDTO);
+        } finally {
+            if (lock.isHeldByCurrentThread()) {
+                lock.unlock();
+            }
+        }
+    }
+
+    /**
+     * 插入 RPC 搬运任务。
+     */
+    private Long insertTransportTaskByRpc(TransportTaskCreateReqDTO reqDTO) {
         TransportTaskDO task = BeanUtils.toBean(reqDTO, TransportTaskDO.class);
         CodeGenerateReqDTO codeGenerateReqDTO = new CodeGenerateReqDTO();
         codeGenerateReqDTO.setRuleCode("TASK_CODE");
@@ -218,6 +250,12 @@ public class TransportTaskServiceImpl implements TransportTaskService {
         return TransportTaskConvert.INSTANCE.convert(task);
     }
 
+    @Override
+    public TaskInfoDTO getUnfinishedTaskInfoByBiz(String ownerService, String bizType, String bizId) {
+        TransportTaskDO task = transportTaskMapper.selectUnfinishedByBiz(ownerService, bizType, bizId);
+        return TransportTaskConvert.INSTANCE.convert(task);
+    }
+
     @Override
     public List<TaskInfoDTO> getRunningTaskInfoByMaterialId(Long materialId, String ownerService) {
         List<TransportTaskDO> tasks = transportTaskMapper.selectRunningListByMaterialId(materialId, ownerService);