diff --git a/assets/core/common/audio/AudioManager.ts b/assets/core/common/audio/AudioManager.ts
index 32ff136..3d667a7 100644
--- a/assets/core/common/audio/AudioManager.ts
+++ b/assets/core/common/audio/AudioManager.ts
@@ -167,8 +167,7 @@ export class AudioManager extends Component {
         this.local_data.switch_music = this._switch_music;
         this.local_data.switch_effect = this._switch_effect;
 
-        let data = JSON.stringify(this.local_data);
-        oops.storage.set(LOCAL_STORE_KEY, data);
+        oops.storage.set(LOCAL_STORE_KEY, this.local_data);
     }
 
 
@@ -177,25 +176,35 @@ export class AudioManager extends Component {
         this.music = this.getComponent(AudioMusic) || this.addComponent(AudioMusic)!;
         this.effect = this.getComponent(AudioEffect) || this.addComponent(AudioEffect)!;
 
-        let data = oops.storage.get(LOCAL_STORE_KEY);
-        if (data) {
+        this.local_data = oops.storage.getJson(LOCAL_STORE_KEY);
+        if (this.local_data) {
             try {
-                this.local_data = JSON.parse(data);
-                this._volume_music = this.local_data.volume_music;
-                this._volume_effect = this.local_data.volume_effect;
-                this._switch_music = this.local_data.switch_music;
-                this._switch_effect = this.local_data.switch_effect;
+                this.setState();
             }
             catch (e) {
-                this.local_data = {};
-                this._volume_music = 1;
-                this._volume_effect = 1;
-                this._switch_music = true;
-                this._switch_effect = true;
+                this.setStateDefault();
             }
-
-            if (this.music) this.music.volume = this._volume_music;
-            if (this.effect) this.effect.volume = this._volume_effect;
         }
+        else {
+            this.setStateDefault();
+        }
+
+        if (this.music) this.music.volume = this._volume_music;
+        if (this.effect) this.effect.volume = this._volume_effect;
+    }
+
+    private setState() {
+        this._volume_music = this.local_data.volume_music;
+        this._volume_effect = this.local_data.volume_effect;
+        this._switch_music = this.local_data.switch_music;
+        this._switch_effect = this.local_data.switch_effect;
+    }
+
+    private setStateDefault() {
+        this.local_data = {};
+        this._volume_music = 1;
+        this._volume_effect = 1;
+        this._switch_music = true;
+        this._switch_effect = true;
     }
 }
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