diff --git a/backend/src/main/java/com/designhub/service/TaskItemService.java b/backend/src/main/java/com/designhub/service/TaskItemService.java
index aa24c58..ed51e54 100644
--- a/backend/src/main/java/com/designhub/service/TaskItemService.java
+++ b/backend/src/main/java/com/designhub/service/TaskItemService.java
@@ -11,6 +11,7 @@ import com.designhub.exception.BusinessException;
 import com.designhub.mapper.TaskItemMapper;
 import com.designhub.mapper.TaskMapper;
 import com.designhub.mapper.DepartmentMapper;
+import com.designhub.mapper.DemandTypeMapper;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -37,7 +38,7 @@ public class TaskItemService {
     private final ConfigService configService;
     private final ExternalAssetService externalAssetService;
     private final SystemConfigService systemConfigService;
-    private final com.designhub.mapper.TaskTypeMapper taskTypeMapper;
+    private final DemandTypeMapper demandTypeMapper;
 
     /**
      * 获取可接单的子任务列表
@@ -1020,7 +1021,7 @@ public class TaskItemService {
             return null;
         }
         
-        com.designhub.entity.TaskType taskType = taskTypeMapper.selectById(taskTypeId);
+        com.designhub.entity.DemandType taskType = demandTypeMapper.selectById(taskTypeId);
         if (taskType == null) {
             return null;
         }