diff --git a/src/main/java/com/zh/project0512/mapper/TaskMapper.java b/src/main/java/com/zh/project0512/mapper/TaskMapper.java
index 41806dc..998952a 100644
--- a/src/main/java/com/zh/project0512/mapper/TaskMapper.java
+++ b/src/main/java/com/zh/project0512/mapper/TaskMapper.java
@@ -39,7 +39,10 @@ public interface TaskMapper extends BaseMapper<Task> {
         "</if>" +
 
         "<if test='openid!=null'>"+
-        "and t1.id in (SELECT taskId from taskDepartment inner JOIN user on user.openid =#{openid} and user.main_department = taskDepartment.departmentId) "+
+        "and IF((SELECT count(*)!=0 FROM taskDepartment WHERE taskId = t1.id)>0," +
+        "t1.id in (SELECT taskId from taskDepartment inner JOIN user on user.openid =#{openid} " +
+        "and user.main_department = taskDepartment.departmentId), " +
+        " 1=1)"+
         "</if>"+
 
         "<if test='ew != null'>" +
diff --git a/src/main/resources/mapper/TaskMapper.xml b/src/main/resources/mapper/TaskMapper.xml
index a9c3a21..e9fb1ea 100644
--- a/src/main/resources/mapper/TaskMapper.xml
+++ b/src/main/resources/mapper/TaskMapper.xml
@@ -55,7 +55,11 @@
             )
         </if>
         <if test='openid!=null'>
-            and t1.id in (SELECT taskId from taskDepartment inner JOIN user on user.openid =#{openid} and user.main_department = taskDepartment.departmentId)
+            and
+            IF((SELECT count(*)!=0 FROM taskDepartment WHERE taskId = t1.id)>0,
+            t1.id in (SELECT taskId from taskDepartment inner JOIN user on user.openid =#{openid}
+            and user.main_department = taskDepartment.departmentId),
+            1=1)
         </if>
         <if test='ew != null'>
             <if test='ew.nonEmptyOfWhere'>