diff --git a/Runtime/GuruCore/Runtime/ExtensionKit/DeviceIDHelper.cs b/Runtime/GuruCore/Runtime/ExtensionKit/DeviceIDHelper.cs
index abbdc24..d9468ab 100644
--- a/Runtime/GuruCore/Runtime/ExtensionKit/DeviceIDHelper.cs
+++ b/Runtime/GuruCore/Runtime/ExtensionKit/DeviceIDHelper.cs
@@ -7,7 +7,7 @@ namespace Guru
         /// UUID (V4) 
         /// </summary>
         /// <returns></returns>
-        public static string UUID => System.Guid.NewGuid().ToString();
+        public static string UUID => System.Guid.NewGuid().ToString("D");
         
 
         /// <summary>
diff --git a/Runtime/GuruIAP/Runtime/Code/IAPServiceBase.cs b/Runtime/GuruIAP/Runtime/Code/IAPServiceBase.cs
index 3ca3c98..07961fc 100644
--- a/Runtime/GuruIAP/Runtime/Code/IAPServiceBase.cs
+++ b/Runtime/GuruIAP/Runtime/Code/IAPServiceBase.cs
@@ -22,7 +22,7 @@ namespace Guru
         private const string DefaultCategory = "Store";
 
         private static bool _showLog;
-        private static string _userId;
+        private static string _uuid;
         
         private ConfigurationBuilder _configBuilder; // 商店配置创建器
         
@@ -133,9 +133,9 @@ namespace Guru
         /// <summary>
         /// 初始化支付服务
         /// </summary>
-        public virtual void Initialize(string userId, bool showLog = false)
+        public virtual void Initialize(string uuid, bool showLog = false)
         {
-            _userId = userId;
+            _uuid = uuid;
             _showLog = showLog;
             InitPurchasing();
         }
@@ -143,16 +143,16 @@ namespace Guru
         /// <summary>
         /// 带有校验器的初始化
         /// </summary>
-        /// <param name="userId"></param>
+        /// <param name="uuid"></param>
         /// <param name="googlePublicKey"></param>
         /// <param name="appleRootCert"></param>
         /// <param name="showLog"></param>
-        public virtual void InitWithKeys(string userId, byte[] googlePublicKey, byte[] appleRootCert, bool showLog = false)
+        public virtual void InitWithKeys(string uuid, byte[] googlePublicKey, byte[] appleRootCert, bool showLog = false)
         {
             _googlePublicKey = googlePublicKey;
             _appleRootCert = appleRootCert;
             InitModel();
-            Initialize(userId, showLog);
+            Initialize(uuid, showLog);
         }
 
         /// <summary>
@@ -229,9 +229,9 @@ namespace Guru
         {
             _storeController = controller;
             _storeExtensionProvider = extensions;
-            if (string.IsNullOrEmpty(_userId)) _userId = IPMConfig.IPM_UID;
+            if (string.IsNullOrEmpty(_uuid)) _uuid = IPMConfig.IPM_DEVICE_ID;
          
-            LogI($"--- IAP Initialized Success. With UID: {_userId}");
+            LogI($"--- IAP Initialized Success. With UID: {_uuid}");
 
 #if UNITY_IOS
             _appleExtensions = extensions.GetExtension<IAppleExtensions>();
@@ -244,7 +244,7 @@ namespace Guru
                 OnAppStorePurchaseDeferred?.Invoke(item);
             });
 #elif UNITY_ANDROID
-            _configBuilder.Configure<IGooglePlayConfiguration>().SetObfuscatedAccountId(_userId); // SetUp UID
+            _configBuilder.Configure<IGooglePlayConfiguration>().SetObfuscatedAccountId(_uuid); // SetUp UID
             _googlePlayStoreExtensions = extensions.GetExtension<IGooglePlayStoreExtensions>();
             // _googlePlayStoreExtensions.SetObfuscatedAccountId(IPMConfig.IPM_UID);
             //添加安装游戏后第一次初试化进行恢复购买的回调 只有安卓才有