diff --git a/app/routes/rule-groups.new.tsx b/app/routes/rule-groups.new.tsx
index af712d0..ad59e11 100644
--- a/app/routes/rule-groups.new.tsx
+++ b/app/routes/rule-groups.new.tsx
@@ -100,12 +100,18 @@ export async function loader({ request }: LoaderFunctionArgs) {
     // console.log("获取到的ID参数:", id);
     
     // 获取一级分组列表 (用于选择父级分组)
-    const parentGroupsResponse = await getRuleGroups(frontendJWT);
+    // 🆕 使用增强的 getRuleGroups API，仅获取一级分组且已启用的分组
+    const parentGroupsResponse = await getRuleGroups({
+      pid: null,          // 仅获取一级分组（pid为null表示顶级分组）
+      is_enabled: true,   // 仅获取已启用的分组
+      pageSize: 100,      // 获取足够多的分组
+      token: frontendJWT
+    });
     if (parentGroupsResponse.error) {
       console.error("获取父分组列表失败:", parentGroupsResponse.error);
       throw new Error(parentGroupsResponse.error);
     }
-    
+
     const parentGroups: ParentGroup[] = parentGroupsResponse.data ? parentGroupsResponse.data.map(group => ({
       id: group.id,
       name: group.name
@@ -194,7 +200,7 @@ export async function action({ request }: ActionFunctionArgs) {
     code: code.trim(),
     description: description?.trim() || "",
     is_enabled: status === "active",
-    pid: parentId || undefined // 🆕 NULL/undefined 表示顶级分组
+    pid: parentId || null // 🆕 NULL 表示顶级分组
   };
   
   try {
@@ -274,10 +280,14 @@ export default function RuleGroupNew() {
     parentId?: string;
     general?: string;
   }>({});
-  
+
+  // 🆕 编码唯一性验证状态
+  const [codeValidating, setCodeValidating] = useState(false);
+  const [codeValidationTimer, setCodeValidationTimer] = useState<NodeJS.Timeout | null>(null);
+
   // 表单引用
   const formRef = useRef<HTMLFormElement>(null);
-  
+
   // 字段是否被触摸过（用于确定何时显示错误）
   const [touchedFields, setTouchedFields] = useState<{
     name: boolean;
@@ -310,6 +320,44 @@ export default function RuleGroupNew() {
     }
   }, [group]);
 
+  // 🆕 异步验证编码唯一性
+  const validateCodeUnique = async (code: string): Promise<string> => {
+    if (!code || code.trim() === "") {
+      return "";
+    }
+
+    try {
+      setCodeValidating(true);
+      const response = await getRuleGroups({
+        code: code.trim(),
+        pageSize: 10,
+        token: data.frontendJWT
+      });
+
+      if (response.error) {
+        console.error("验证编码唯一性失败:", response.error);
+        return ""; // 验证失败时不显示错误，避免干扰用户
+      }
+
+      if (response.data && response.data.length > 0) {
+        // 在编辑模式下，排除当前分组自身
+        const isDuplicate = response.data.some(g =>
+          g.id !== group?.id && g.code === code.trim()
+        );
+        if (isDuplicate) {
+          return "该编码已被使用，请使用其他编码";
+        }
+      }
+
+      return "";
+    } catch (error) {
+      console.error("验证编码唯一性出错:", error);
+      return "";
+    } finally {
+      setCodeValidating(false);
+    }
+  };
+
   // 验证表单字段
   const validateField = (field: string, value: string) => {
     switch (field) {
@@ -323,8 +371,8 @@ export default function RuleGroupNew() {
         }
         return "";
       case 'parentId':
-        return formValues.groupType === "secondary" && value.trim() === "" 
-          ? "请选择上级分组" 
+        return formValues.groupType === "secondary" && value.trim() === ""
+          ? "请选择上级分组"
           : "";
       default:
         return "";
@@ -334,12 +382,12 @@ export default function RuleGroupNew() {
   // 处理字段改变
   const handleChange = (e: React.ChangeEvent<HTMLInputElement | HTMLSelectElement | HTMLTextAreaElement>) => {
     const { name, value } = e.target;
-    
+
     setFormValues(prev => ({
       ...prev,
       [name]: value
     }));
-    
+
     // 标记字段为已触摸
     if (['name', 'code', 'parentId'].includes(name)) {
       setTouchedFields(prev => ({
@@ -347,13 +395,34 @@ export default function RuleGroupNew() {
         [name]: true
       }));
     }
-    
+
     // 实时验证
     const error = validateField(name, value);
     setFormErrors(prev => ({
       ...prev,
       [name]: error
     }));
+
+    // 🆕 编码字段特殊处理：异步验证唯一性（防抖处理）
+    if (name === 'code' && !error) {
+      // 清除之前的定时器
+      if (codeValidationTimer) {
+        clearTimeout(codeValidationTimer);
+      }
+
+      // 设置新的定时器，500ms后执行验证
+      const timer = setTimeout(async () => {
+        const uniqueError = await validateCodeUnique(value);
+        if (uniqueError) {
+          setFormErrors(prev => ({
+            ...prev,
+            code: uniqueError
+          }));
+        }
+      }, 500);
+
+      setCodeValidationTimer(timer);
+    }
   };
   
   // 处理分组类型更改
@@ -551,6 +620,7 @@ export default function RuleGroupNew() {
                   <div className="form-group">
                     <label htmlFor="code" className="form-label">
                       分组编码 <span className="required-mark">*</span>
+                      {codeValidating && <span className="ml-2 text-sm text-gray-500">验证中...</span>}
                     </label>
                     <input
                       type="text"