diff --git a/backend/src/main/java/com/designhub/service/TaskItemService.java b/backend/src/main/java/com/designhub/service/TaskItemService.java
index 4fed395..6189180 100644
--- a/backend/src/main/java/com/designhub/service/TaskItemService.java
+++ b/backend/src/main/java/com/designhub/service/TaskItemService.java
@@ -1099,14 +1099,16 @@ public class TaskItemService {
                         }
                     }
                     
-                    // 子任务的任务类型信息
-                    groupInfo.put("taskTypeId", item.getTaskTypeId());
-                    if (item.getTaskTypeId() != null) {
-                        com.designhub.entity.DemandType taskType = demandTypeMapper.selectById(item.getTaskTypeId());
+                    // 主任务的任务类型信息（显示一级分类如"新品"、"优化"）
+                    groupInfo.put("taskTypeId", mainTask.getTaskTypeId());
+                    if (mainTask.getTaskTypeId() != null) {
+                        com.designhub.entity.DemandType taskType = demandTypeMapper.selectById(mainTask.getTaskTypeId());
                         if (taskType != null) {
                             groupInfo.put("taskTypeName", taskType.getName());
                         }
                     }
+                    // 子任务的具体任务类型ID（用于审核流程）
+                    groupInfo.put("subTaskTypeId", item.getTaskTypeId());
                     
                     // 添加审核人信息（目标部门负责人）
                     Long targetDeptId = getTargetDeptIdFromTaskType(item.getTaskTypeId());