diff --git a/lib/core/config/app_config.dart b/lib/core/config/app_config.dart
index 98baefc..2d1c8c7 100644
--- a/lib/core/config/app_config.dart
+++ b/lib/core/config/app_config.dart
@@ -11,10 +11,10 @@ import 'package:flutter/foundation.dart';
 class AppConfig {
   const AppConfig._();
 
-  /// 开发调试默认服务地址，当前直接指向公网。
+  /// 开发调试默认服务地址，当前指向本机局域网 IP。
   ///
-  /// 需要切换局域网联调时只改这一行，地址不要带结尾斜杠。
-  static const String devHostBaseUrl = 'http://39.162.50.99:8081';
+  /// 换网络时只改这一行，地址不要带结尾斜杠。
+  static const String devHostBaseUrl = 'http://10.39.237.1:8081';
 
   /// 本机后端地址：通过 `adb reverse tcp:8081 tcp:8081` 映射到开发机，
   /// 探测可达时 App 直连本机服务；不可达时回落到公网地址。
diff --git a/test/config/server_endpoint_test.dart b/test/config/server_endpoint_test.dart
index 524eede..59beeb8 100644
--- a/test/config/server_endpoint_test.dart
+++ b/test/config/server_endpoint_test.dart
@@ -62,8 +62,8 @@ void main() {
     );
   });
 
-  test('should_use_the_configured_public_address_for_device_default', () {
-    expect(AppConfig.devHostBaseUrl, 'http://39.162.50.99:8081');
+  test('should_use_the_configured_local_address_for_device_default', () {
+    expect(AppConfig.devHostBaseUrl, 'http://10.39.237.1:8081');
   });
 
   test('should_skip_probe_when_compiled_override_is_set', () async {
@@ -111,7 +111,11 @@ void main() {
       },
     );
 
-    expect(attempts, [AppConfig.lanBaseUrl, AppConfig.devHostBaseUrl]);
+    expect(attempts, [
+      AppConfig.lanBaseUrl,
+      AppConfig.devHostBaseUrl,
+      AppConfig.publicBaseUrl,
+    ]);
     expect(AppConfig.apiBaseUrl, AppConfig.publicBaseUrl);
   });
 
@@ -129,7 +133,7 @@ void main() {
           attempts.add(baseUrl);
           active++;
           if (active > maxActive) maxActive = active;
-          if (active == 2) allStarted.complete();
+          if (active == 3) allStarted.complete();
           await allStarted.future;
           active--;
           return baseUrl == AppConfig.lanBaseUrl ||
@@ -139,8 +143,12 @@ void main() {
 
       await probing.timeout(const Duration(seconds: 1));
 
-      expect(attempts, [AppConfig.lanBaseUrl, AppConfig.devHostBaseUrl]);
-      expect(maxActive, 2);
+      expect(attempts, [
+        AppConfig.lanBaseUrl,
+        AppConfig.devHostBaseUrl,
+        AppConfig.publicBaseUrl,
+      ]);
+      expect(maxActive, 3);
       expect(AppConfig.apiBaseUrl, AppConfig.lanBaseUrl);
     },
   );
@@ -156,7 +164,11 @@ void main() {
       },
     );
 
-    expect(attempts, [AppConfig.lanBaseUrl, AppConfig.devHostBaseUrl]);
+    expect(attempts, [
+      AppConfig.lanBaseUrl,
+      AppConfig.devHostBaseUrl,
+      AppConfig.publicBaseUrl,
+    ]);
     expect(AppConfig.apiBaseUrl, AppConfig.publicBaseUrl);
   });
 
@@ -171,7 +183,11 @@ void main() {
       },
     );
 
-    expect(attempts, [AppConfig.lanBaseUrl, AppConfig.devHostBaseUrl]);
+    expect(attempts, [
+      AppConfig.lanBaseUrl,
+      AppConfig.devHostBaseUrl,
+      AppConfig.publicBaseUrl,
+    ]);
     expect(AppConfig.apiBaseUrl, AppConfig.devHostBaseUrl);
   });
 
@@ -187,7 +203,12 @@ void main() {
       },
     );
 
-    expect(attempts, [custom, AppConfig.lanBaseUrl, AppConfig.devHostBaseUrl]);
+    expect(attempts, [
+      custom,
+      AppConfig.lanBaseUrl,
+      AppConfig.devHostBaseUrl,
+      AppConfig.publicBaseUrl,
+    ]);
     expect(AppConfig.apiBaseUrl, custom);
   });