diff --git a/Runtime/GuruIAP/Runtime/Code/IAPModel.cs b/Runtime/GuruIAP/Runtime/Code/IAPModel.cs
index 1be7382..5bf90ee 100644
--- a/Runtime/GuruIAP/Runtime/Code/IAPModel.cs
+++ b/Runtime/GuruIAP/Runtime/Code/IAPModel.cs
@@ -7,6 +7,7 @@ namespace Guru
     using System;
     using Newtonsoft.Json;
     
+    [Serializable]
     public class IAPModel
     {
         public static readonly float SaveInterval = 3;
@@ -14,7 +15,8 @@ namespace Guru
 
         public static readonly string PlatformAndroid = "android";
         public static readonly string PlatformIOS = "ios";
-        
+
+        public bool isIapUser = false;
         public int buyCount = 0;
         public List<string> androidTokens;
         public List<string> iosReceipts;
@@ -219,12 +221,17 @@ namespace Guru
             set
             {
                 buyCount = value;
+                if (buyCount > 0 && isIapUser == false) isIapUser = true;
                 Save();
             }
         }
-        
-        
 
+       
+        public void SetIsIapUser(bool isIap)
+        {
+            isIapUser = isIap;
+            Save();
+        }
 
         #endregion
         
diff --git a/Runtime/GuruIAP/Runtime/Code/IAPServiceBase.cs b/Runtime/GuruIAP/Runtime/Code/IAPServiceBase.cs
index 696833a..07f359e 100644
--- a/Runtime/GuruIAP/Runtime/Code/IAPServiceBase.cs
+++ b/Runtime/GuruIAP/Runtime/Code/IAPServiceBase.cs
@@ -881,6 +881,7 @@ namespace Guru
         /// <param name="value"></param>
         public static void SetIsIAPUser(bool value = true)
         {
+            Instance._model.SetIsIapUser(value); // 用户属性
             Analytics.SetUserProperty(Analytics.PropertyIsIAPUser, value ? "true" : "false");
         }