diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index 8557ccc..f236ffd 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -14,8 +14,7 @@
         <!-- ★ 여기에 meta-data 추가 ★ -->
         <meta-data
             android:name="com.google.android.gms.ads.APPLICATION_ID"
-            android:value="ca-app-pub-3940256099942544~3347511713" />
-        <!-- android:value="ca-app-pub-6461991944599918~9492697896" -->
+            android:value="ca-app-pub-6461991944599918~9492697896" />
 
         <!-- 구글 로그인 관련 -->
         <!-- <meta-data
diff --git a/ios/Runner/Info.plist b/ios/Runner/Info.plist
index f34d25f..97e9783 100644
--- a/ios/Runner/Info.plist
+++ b/ios/Runner/Info.plist
@@ -36,7 +36,8 @@
 	<key>CFBundleVersion</key>
 	<string>$(FLUTTER_BUILD_NUMBER)</string>
 	<key>GADApplicationIdentifier</key>
-	<string>ca-app-pub-3940256099942544~1458002511</string>
+	<!-- <string>ca-app-pub-3940256099942544~1458002511</string> -->
+	<string>ca-app-pub-6461991944599918~9492697896</string>
 	<key>GIDClientID</key>
 	<string>452355332155-26g42j6p8kfdeknncqfmt7sitvvj611l.apps.googleusercontent.com</string>
 	<key>LSRequiresIPhoneOS</key>
diff --git a/lib/config/config.dart b/lib/config/config.dart
index fe99915..e32da6c 100644
--- a/lib/config/config.dart
+++ b/lib/config/config.dart
@@ -4,8 +4,8 @@ class Config {
   // 실제 광고 단위 ID
   static const String realAdUnitId = 'ca-app-pub-6461991944599918~9492697896';
   // 테스트 광고 단위 ID
-  // static const String adUnitId = 'ca-app-pub-6461991944599918~9492697896';
-  static const String adUnitId = 'ca-app-pub-3940256099942544/6300978111';
+  static const String adUnitId = 'ca-app-pub-6461991944599918~9492697896';
+  // static const String adUnitId = 'ca-app-pub-3940256099942544/6300978111';
   // 서버 주소
   static const String baseUrl = 'https://d2zcnlqji5t7mh.cloudfront.net';
   // 이미지 업로드 주소