diff --git a/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/controller/system/SysDeptController.java b/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/controller/system/SysDeptController.java
index 07901bce..1855a208 100644
--- a/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/controller/system/SysDeptController.java
+++ b/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/controller/system/SysDeptController.java
@@ -12,6 +12,7 @@ import org.dromara.common.web.core.BaseController;
 import org.dromara.system.domain.bo.SysDeptBo;
 import org.dromara.system.domain.vo.SysDeptVo;
 import org.dromara.system.service.ISysDeptService;
+import org.dromara.system.service.ISysPostService;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
@@ -29,6 +30,7 @@ import java.util.List;
 public class SysDeptController extends BaseController {
 
     private final ISysDeptService deptService;
+    private final ISysPostService postService;
 
     /**
      * 获取部门列表
@@ -117,6 +119,9 @@ public class SysDeptController extends BaseController {
         if (deptService.checkDeptExistUser(deptId)) {
             return R.warn("部门存在用户,不允许删除");
         }
+        if (postService.countPostByDeptId(deptId) > 0) {
+            return R.warn("部门存在岗位,不允许删除");
+        }
         deptService.checkDeptDataScope(deptId);
         return toAjax(deptService.deleteDeptById(deptId));
     }
diff --git a/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/ISysPostService.java b/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/ISysPostService.java
index c43f0395..3751b23b 100644
--- a/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/ISysPostService.java
+++ b/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/ISysPostService.java
@@ -80,6 +80,14 @@ public interface ISysPostService {
      */
     long countUserPostById(Long postId);
 
+    /**
+     * 通过部门ID查询岗位使用数量
+     *
+     * @param deptId 部门id
+     * @return 结果
+     */
+    long countPostByDeptId(Long deptId);
+
     /**
      * 删除岗位信息
      *
diff --git a/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysPostServiceImpl.java b/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysPostServiceImpl.java
index b8a7e607..2c38129a 100644
--- a/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysPostServiceImpl.java
+++ b/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysPostServiceImpl.java
@@ -177,6 +177,17 @@ public class SysPostServiceImpl implements ISysPostService {
         return userPostMapper.selectCount(new LambdaQueryWrapper<SysUserPost>().eq(SysUserPost::getPostId, postId));
     }
 
+    /**
+     * 通过部门ID查询岗位使用数量
+     *
+     * @param deptId 部门id
+     * @return 结果
+     */
+    @Override
+    public long countPostByDeptId(Long deptId) {
+        return baseMapper.selectCount(new LambdaQueryWrapper<SysPost>().eq(SysPost::getDeptId, deptId));
+    }
+
     /**
      * 删除岗位信息
      *