diff --git a/backend/src/main/java/com/designhub/service/DesignerService.java b/backend/src/main/java/com/designhub/service/DesignerService.java
index 7c20e4e..ad9ef38 100644
--- a/backend/src/main/java/com/designhub/service/DesignerService.java
+++ b/backend/src/main/java/com/designhub/service/DesignerService.java
@@ -486,8 +486,10 @@ public class DesignerService {
             taskItem.put("status", item.getStatus());
             taskItem.put("progress", item.getProgress());
             taskItem.put("score", item.getTotalScore());
-            taskItem.put("startTime", item.getStartTime());
-            taskItem.put("deadline", item.getDeadline());
+            taskItem.put("startTime", item.getCreateTime()); // 使用创建时间作为开始时间
+            // 获取主任务的截止时间
+            Task mainTask = taskMapper.selectById(item.getTaskId());
+            taskItem.put("deadline", mainTask != null ? mainTask.getDeadline() : null);
             taskItem.put("createTime", item.getCreateTime());
             taskItem.put("isSubTask", true);
             taskItem.put("type", "子任务");