diff --git a/src/main/java/com/yunhai/flowcenter/controller/api/FlowAdminController.java b/src/main/java/com/yunhai/flowcenter/controller/api/FlowAdminController.java
index d4f79a0..a5c91c1 100644
--- a/src/main/java/com/yunhai/flowcenter/controller/api/FlowAdminController.java
+++ b/src/main/java/com/yunhai/flowcenter/controller/api/FlowAdminController.java
@@ -12,6 +12,8 @@ import com.yunhai.flowcenter.service.FlowCallbackAdminService;
 import com.yunhai.flowcenter.service.FlowDefAdminService;
 import com.yunhai.flowcenter.service.FlowDiagramService;
 import com.yunhai.flowcenter.service.FlowMapAdminService;
+import com.yunhai.platform.apistd.BizException;
+import com.yunhai.platform.utils.exception.ErrorCode;
 import com.yunhai.platform.utils.model.BasePageResult;
 import com.yunhai.platform.utils.model.BoaUser;
 import lombok.RequiredArgsConstructor;
@@ -178,21 +180,21 @@ public class FlowAdminController {
     @PostMapping("/dept/rename")
     public com.yunhai.flowcenter.entity.FlwDept deptRename(BoaUser user, @RequestBody Map<String, Object> body) {
         Long schId = adminGuard.requireAdmin(user, null);
-        return deptAdminService.rename(schId, longVal(body.get("id")), (String) body.get("deptName"));
+        return deptAdminService.rename(schId, requireId(body.get("id")), (String) body.get("deptName"));
     }
 
     /** 停用/启用科室（停用=解析不出办理人、发布校验拦新引用；成员不动） */
     @PostMapping("/dept/status")
     public void deptStatus(BoaUser user, @RequestBody Map<String, Object> body) {
         Long schId = adminGuard.requireAdmin(user, null);
-        deptAdminService.setStatus(schId, longVal(body.get("id")), boolVal(body.get("enabled")));
+        deptAdminService.setStatus(schId, requireId(body.get("id")), boolVal(body.get("enabled")));
     }
 
     /** 删除科室（级联删成员；被流程引用的 deptKey 将解析失败——发布校验/办理时会拦） */
     @PostMapping("/dept/delete")
     public void deptDelete(BoaUser user, @RequestBody Map<String, Object> body) {
         Long schId = adminGuard.requireAdmin(user, null);
-        deptAdminService.delete(schId, longVal(body.get("id")));
+        deptAdminService.delete(schId, requireId(body.get("id")));
     }
 
     @GetMapping("/dept/members")
@@ -214,13 +216,13 @@ public class FlowAdminController {
                 }
             }
         }
-        return deptAdminService.memberAdd(schId, longVal(body.get("deptId")), userIds);
+        return deptAdminService.memberAdd(schId, requireId(body.get("deptId")), userIds);
     }
 
     @PostMapping("/dept/memberRemove")
     public void deptMemberRemove(BoaUser user, @RequestBody Map<String, Object> body) {
         Long schId = adminGuard.requireAdmin(user, null);
-        deptAdminService.memberRemove(schId, longVal(body.get("memberId")));
+        deptAdminService.memberRemove(schId, requireId(body.get("memberId")));
     }
 
     /**
@@ -242,6 +244,15 @@ public class FlowAdminController {
         return o == null ? null : Long.valueOf(String.valueOf(o));
     }
 
+    /** 科室/成员行 id 缺失=调用方bug/脏请求：回业务错提示，不让 findById(null) 炸成笼统 500 */
+    private static Long requireId(Object o) {
+        Long v = longVal(o);
+        if (v == null) {
+            throw new BizException(ErrorCode.PARAM_ERROR, "缺少 id");
+        }
+        return v;
+    }
+
     private static boolean boolVal(Object o) {
         return o == null ? false : Boolean.parseBoolean(String.valueOf(o));
     }