diff --git a/.env.example b/.env.example
index ae86db1..17407ec 100644
--- a/.env.example
+++ b/.env.example
@@ -1,7 +1,7 @@
 CREATORHUB_PORT=8082
 CREATORHUB_POSTGRES_PORT=15433
 DATABASE_URL=postgres://creatorhub@127.0.0.1:15433/creatorhub?sslmode=disable
-NATIVE_GATEWAY_ENDPOINT=http://127.0.0.1:8081
+NATIVE_GATEWAY_ENDPOINT=http://127.0.0.1:28187
 GATEWAY_TOKEN=dev-creatorhub-gateway-token
 BROWSER_STATE_DIR=~/.local/state/creatorhub/browser-gateway
 BROWSER_PROFILE_ROOT=~/.local/share/creatorhub/browser-profiles
diff --git a/README.md b/README.md
index 92bd7c0..1fed2e2 100644
--- a/README.md
+++ b/README.md
@@ -89,7 +89,7 @@ pnpm frontend  # Vite 前端，支持 HMR
 | --- | --- | --- |
 | 前端 | <http://127.0.0.1:5173> | `/api` 代理到本地 control-plane |
 | control-plane | <http://127.0.0.1:8082> | Go 热加载 |
-| native browser gateway | <http://127.0.0.1:8081> | 宿主机 Xvfb/浏览器生命周期 |
+| native browser gateway | <http://127.0.0.1:28187> | 宿主机 Xvfb/浏览器生命周期 |
 | PostgreSQL | `127.0.0.1:15433`（可由 `CREATORHUB_POSTGRES_PORT` 覆盖） | 仅数据库依赖使用容器 |
 
 开发默认登录信息和目录可在 `.env.example`、`deploy/browser-gateway.env.example` 中查看。不要把真实密码、Cookie、验证码或令牌写入仓库。
diff --git a/docs/deployment.md b/docs/deployment.md
index 599bfe4..21822b5 100644
--- a/docs/deployment.md
+++ b/docs/deployment.md
@@ -116,7 +116,7 @@ pnpm frontend  # Vite，HMR
 | --- | --- |
 | Vite | `http://127.0.0.1:5173` |
 | control-plane | `http://0.0.0.0:8082` |
-| native gateway | `http://0.0.0.0:8081` |
+| native gateway | `http://127.0.0.1:28187` |
 | PostgreSQL | `127.0.0.1:15433`（可由 `CREATORHUB_POSTGRES_PORT` 覆盖） |
 
 ## 首次配置与生命周期
diff --git a/scripts/dev-backend.mjs b/scripts/dev-backend.mjs
index 1ab46c3..5d860b1 100755
--- a/scripts/dev-backend.mjs
+++ b/scripts/dev-backend.mjs
@@ -36,7 +36,7 @@ if (!overrides.DATABASE_URL) {
 if (!overrides.CREATORHUB_CREDENTIAL_STORE_DIR) overrides.CREATORHUB_CREDENTIAL_STORE_DIR = path.join(root, ".dev-credentials");
 if (!overrides.WEB_DIR) overrides.WEB_DIR = path.join(root, "web", "dist");
 if (!overrides.LOG_LEVEL) overrides.LOG_LEVEL = "debug";
-if (!overrides.NATIVE_GATEWAY_ENDPOINT) overrides.NATIVE_GATEWAY_ENDPOINT = "http://127.0.0.1:8081";
+if (!overrides.NATIVE_GATEWAY_ENDPOINT) overrides.NATIVE_GATEWAY_ENDPOINT = "http://127.0.0.1:28187";
 
 const env = { ...process.env, ...overrides };
 const air = spawn("air", ["-c", ".air.toml", ...process.argv.slice(2)], {
diff --git a/scripts/dev-gateway.mjs b/scripts/dev-gateway.mjs
index 7aa8bac..654a5a9 100644
--- a/scripts/dev-gateway.mjs
+++ b/scripts/dev-gateway.mjs
@@ -23,9 +23,22 @@ const gatewayEnvPath = process.env.CREATORHUB_BROWSER_GATEWAY_ENV
   ?? path.join(os.homedir(), ".config", "creatorhub", "browser-gateway.env");
 const gatewayEnv = readEnvFile(gatewayEnvPath);
 const env = { ...process.env, ...rootEnv, ...gatewayEnv };
-if (!env.LISTEN_ADDR) env.LISTEN_ADDR = "0.0.0.0:8081";
+if (!env.LISTEN_ADDR) env.LISTEN_ADDR = "127.0.0.1:28187";
 if (!env.GATEWAY_TOKEN) env.GATEWAY_TOKEN = "dev-creatorhub-gateway-token";
 
+const port = env.LISTEN_ADDR.match(/:(\d+)$/)?.[1] ?? "28187";
+try {
+  const response = await fetch(`http://127.0.0.1:${port}/healthz`, {
+    signal: AbortSignal.timeout(1000),
+  });
+  if (response.status === 204 || response.ok) {
+    console.log(`[dev-gateway] 已有 gateway 运行于 127.0.0.1:${port}，直接复用。`);
+    process.exit(0);
+  }
+} catch {
+  // The port is available or belongs to a different service; let the gateway report that clearly.
+}
+
 const gateway = spawn("python3", ["-m", "browser_gateway.server.http"], {
   cwd: root,
   env,