diff --git a/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysDataScopeServiceImpl.java b/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysDataScopeServiceImpl.java
index 4c86dcd06..aae8f1aeb 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysDataScopeServiceImpl.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysDataScopeServiceImpl.java
@@ -47,7 +47,7 @@ public class SysDataScopeServiceImpl implements ISysDataScopeService {
             .select(SysDept::getDeptId)
             .eq(SysDept::getDeptId, deptId)
             .or()
-            .apply("find_in_set({0},ancestors)", deptId));
+            .apply("find_in_set({0},ancestors) <> 0", deptId));
         if (CollUtil.isNotEmpty(list)) {
             return list.stream().map(d -> Convert.toStr(d.getDeptId())).collect(Collectors.joining(","));
         }
diff --git a/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysDeptServiceImpl.java b/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysDeptServiceImpl.java
index 3875c91d5..3ef5eb8f0 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysDeptServiceImpl.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysDeptServiceImpl.java
@@ -108,7 +108,7 @@ public class SysDeptServiceImpl implements ISysDeptService {
     public long selectNormalChildrenDeptById(Long deptId) {
         return baseMapper.selectCount(new LambdaQueryWrapper<SysDept>()
             .eq(SysDept::getStatus, UserConstants.DEPT_NORMAL)
-            .apply("find_in_set({0}, ancestors)", deptId));
+            .apply("find_in_set({0}, ancestors) <> 0", deptId));
     }
 
     /**
@@ -234,7 +234,7 @@ public class SysDeptServiceImpl implements ISysDeptService {
      */
     public void updateDeptChildren(Long deptId, String newAncestors, String oldAncestors) {
         List<SysDept> children = baseMapper.selectList(new LambdaQueryWrapper<SysDept>()
-            .apply("find_in_set({0},ancestors)", deptId));
+            .apply("find_in_set({0},ancestors) <> 0", deptId));
         List<SysDept> list = new ArrayList<>();
         for (SysDept child : children) {
             SysDept dept = new SysDept();
diff --git a/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysUserServiceImpl.java b/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysUserServiceImpl.java
index 8fca17b11..d236c960c 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysUserServiceImpl.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysUserServiceImpl.java
@@ -80,7 +80,7 @@ public class SysUserServiceImpl implements ISysUserService {
             .and(ObjectUtil.isNotNull(user.getDeptId()), w -> {
                 List<SysDept> deptList = deptMapper.selectList(new LambdaQueryWrapper<SysDept>()
                     .select(SysDept::getDeptId)
-                    .apply("find_in_set({0},ancestors)", user.getDeptId()));
+                    .apply("find_in_set({0},ancestors) <> 0", user.getDeptId()));
                 w.eq("u.dept_id", user.getDeptId())
                     .or()
                     .in("u.dept_id", deptList.stream().map(SysDept::getDeptId).collect(Collectors.toList()));