diff --git a/src/lib/rbac.tsx b/src/lib/rbac.tsx
index 93e91ca..c05d93a 100644
--- a/src/lib/rbac.tsx
+++ b/src/lib/rbac.tsx
@@ -29,7 +29,8 @@ export interface NavGroup {
 export const NAV: NavGroup[] = [
   {
     items: [
-      { to: "/", label: "总览", icon: LayoutDashboard, roles: ["operator", "government", "enterprise", "carrier", "provider", "investor", "opc", "developer"] },
+      // 平台端只保留运营(operator)单一角色；其它端口(政务/企业/服务商/投资/OPC/载体等)不作为平台端角色入口
+      { to: "/", label: "总览", icon: LayoutDashboard, roles: ["operator"] },
     ],
   },
   {
diff --git a/src/pages/login/index.tsx b/src/pages/login/index.tsx
index afd43a5..f7107ea 100644
--- a/src/pages/login/index.tsx
+++ b/src/pages/login/index.tsx
@@ -43,8 +43,9 @@ export default function LoginPage() {
     setLoading(true);
     try {
       const res = await login(username, password);
-      // 多身份：进入身份选择
-      if (res && res.identities.length > 1) setPendingIds(res.identities);
+      // 平台端只保留运营(operator)单一角色：过滤其它端口身份（政务/企业/载体/服务商等）
+      const operatorIds = (res?.identities ?? []).filter((i) => i.role === "operator");
+      if (operatorIds.length > 1) setPendingIds(operatorIds);
       else navigate("/", { replace: true });
     } catch (err) {
       setError(err instanceof Error ? err.message : "登录失败");