diff --git a/goa/proj.android-studio/goa/src/main/java/org/cocos2dx/cpp/AppActivity.java b/goa/proj.android-studio/goa/src/main/java/org/cocos2dx/cpp/AppActivity.java
index a7ff2cde0c..1ae04b9d5a 100644
--- a/goa/proj.android-studio/goa/src/main/java/org/cocos2dx/cpp/AppActivity.java
+++ b/goa/proj.android-studio/goa/src/main/java/org/cocos2dx/cpp/AppActivity.java
@@ -43,6 +43,7 @@ of this software and associated documentation files (the "Software"), to deal
 import android.speech.tts.TextToSpeech;
 import android.util.Log;
 import android.widget.Toast;
+import android.media.AudioManager;
 
 import com.maq.xprize.bali.db.entity.User;
 import com.maq.xprize.bali.repo.UserRepo;
@@ -89,6 +90,7 @@ public class AppActivity extends Cocos2dxActivity {
     private static Context _context;
     private static String currentGameName;
     private static boolean supportForTTSEnabled = false;
+    AudioManager audioManager;
 
     static {
         System.out.println("Loaded library");
@@ -390,6 +392,11 @@ public void onInit(int status) {
                 }
             }
         });
+        audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
+        int maxVolume = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);                     //maximum value of stream media.
+        if (audioManager.getStreamVolume(AudioManager.STREAM_MUSIC) < maxVolume / 2) {                  //check if the audio is less than 50%
+            audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, maxVolume / 2, 0);                  //set the audio to 50% when app start.
+        }
     }
 
     private void needExtraction() {