diff --git a/src/main/java/com/rj/controller/LbDepartmentUserController.java b/src/main/java/com/rj/controller/LbDepartmentUserController.java
index ceaeb8c..a4ccf4e 100644
--- a/src/main/java/com/rj/controller/LbDepartmentUserController.java
+++ b/src/main/java/com/rj/controller/LbDepartmentUserController.java
@@ -75,4 +75,22 @@ public class LbDepartmentUserController {
         }
         return ResponseEntity.internalServerError().body(result);
     }
+
+    @PostMapping("/bindParentUser")
+    @Operation(summary = "绑定父子用户关系")
+    public ResponseEntity<Map<String, Object>> bindParentUser(
+            @RequestParam String parentUserId,
+            @RequestParam(required = false) String parentUserName,
+            @RequestParam String childUserId,
+            @RequestParam(required = false) String childUserName,
+            @RequestParam String tenantId) {
+        Map<String, Object> result = lbDepartmentUserService.bindParentUser(
+                parentUserId, parentUserName, childUserId, childUserName, tenantId
+        );
+        Boolean success = (Boolean) result.get("success");
+        if (success != null && success) {
+            return ResponseEntity.ok(result);
+        }
+        return ResponseEntity.badRequest().body(result);
+    }
 }
diff --git a/src/main/java/com/rj/service/ILbDepartmentUserService.java b/src/main/java/com/rj/service/ILbDepartmentUserService.java
index ceb269c..56d04d8 100644
--- a/src/main/java/com/rj/service/ILbDepartmentUserService.java
+++ b/src/main/java/com/rj/service/ILbDepartmentUserService.java
@@ -21,4 +21,10 @@ public interface ILbDepartmentUserService extends IService<LbDepartmentUser> {
                                   String name,
                                   String phone,
                                   String industry);
+
+    Map<String, Object> bindParentUser(String parentUserId,
+                                       String parentUserName,
+                                       String childUserId,
+                                       String childUserName,
+                                       String tenantId);
 }
diff --git a/src/main/java/com/rj/service/impl/LbDepartmentUserServiceImpl.java b/src/main/java/com/rj/service/impl/LbDepartmentUserServiceImpl.java
index ecd0f16..2b70227 100644
--- a/src/main/java/com/rj/service/impl/LbDepartmentUserServiceImpl.java
+++ b/src/main/java/com/rj/service/impl/LbDepartmentUserServiceImpl.java
@@ -152,4 +152,72 @@ public class LbDepartmentUserServiceImpl extends ServiceImpl<LbDepartmentUserMap
             return result;
         }
     }
+
+    @Override
+    public Map<String, Object> bindParentUser(String parentUserId,
+                                              String parentUserName,
+                                              String childUserId,
+                                              String childUserName,
+                                              String tenantId) {
+        Map<String, Object> result = new HashMap<>();
+        try {
+            if (parentUserId == null || parentUserId.trim().isEmpty()) {
+                result.put("success", false);
+                result.put("message", "父用户id不能为空");
+                return result;
+            }
+            if (childUserId == null || childUserId.trim().isEmpty()) {
+                result.put("success", false);
+                result.put("message", "子用户id不能为空");
+                return result;
+            }
+            if (tenantId == null || tenantId.trim().isEmpty()) {
+                result.put("success", false);
+                result.put("message", "租户id不能为空");
+                return result;
+            }
+
+            String parentUserIdTrim = parentUserId.trim();
+            String childUserIdTrim = childUserId.trim();
+            String tenantIdTrim = tenantId.trim();
+
+            // 第1步：根据子用户id查询目标记录
+            LambdaQueryWrapper<LbDepartmentUser> queryWrapper = new LambdaQueryWrapper<>();
+            queryWrapper.eq(LbDepartmentUser::getTenantId, tenantIdTrim)
+                    .eq(LbDepartmentUser::getUserId, childUserIdTrim);
+            if (childUserName != null && !childUserName.trim().isEmpty()) {
+                queryWrapper.eq(LbDepartmentUser::getName, childUserName.trim());
+            }
+            LbDepartmentUser childUser = this.getOne(queryWrapper, false);
+            if (childUser == null) {
+                result.put("success", false);
+                result.put("message", "未查询到对应子用户");
+                return result;
+            }
+
+            // 第2步：设置父用户id
+            childUser.setParentId(parentUserIdTrim);
+            childUser.setUpdateTime(LocalDateTime.now());
+
+            // 第3步：更新数据库表
+            boolean ok = this.updateById(childUser);
+            result.put("success", ok);
+            result.put("message", ok ? "绑定父用户成功" : "绑定父用户失败");
+            if (ok) {
+                Map<String, Object> data = new HashMap<>();
+                data.put("parentUserId", parentUserIdTrim);
+                data.put("parentUserName", parentUserName);
+                data.put("childUserId", childUserIdTrim);
+                data.put("childUserName", childUser.getName());
+                data.put("tenantId", tenantIdTrim);
+                data.put("record", this.getById(childUser.getId()));
+                result.put("data", data);
+            }
+            return result;
+        } catch (Exception e) {
+            result.put("success", false);
+            result.put("message", "绑定父子用户异常：" + e.getMessage());
+            return result;
+        }
+    }
 }