diff --git a/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudyHomeWorkServiceImpl.java b/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudyHomeWorkServiceImpl.java
index 4a609e96..58e52417 100644
--- a/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudyHomeWorkServiceImpl.java
+++ b/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudyHomeWorkServiceImpl.java
@@ -67,7 +67,7 @@ public class StudyHomeWorkServiceImpl implements IStudyHomeWorkService{
 			//只是保留一条作业记录，不再保存多条记录了
 			//dao.save(homework);
 			//设置id。然后进行悠
-			homework.setId(obj.toString());
+			homework.setId(homework.getStudyItemId());
 			dao.update(homework);
 		}
 	}