diff --git a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientRequestEncryptionExtensions.cs b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientRequestEncryptionExtensions.cs
index 71d63deb..0f685451 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientRequestEncryptionExtensions.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientRequestEncryptionExtensions.cs
@@ -23,7 +23,7 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV3
 
             try
             {
-                bool requireEncrypt = request.GetType().GetCustomAttributes<WechatTenpaySensitiveAttribute>(inherit: true).Any();
+                bool requireEncrypt = Attribute.IsDefined(request.GetType(), typeof(WechatTenpaySensitiveAttribute));
                 if (requireEncrypt)
                 {
                     // 遍历并加密被标记为敏感数据的字段
diff --git a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientResponseDecryptionExtensions.cs b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientResponseDecryptionExtensions.cs
index f9c62447..ce63f9a6 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientResponseDecryptionExtensions.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientResponseDecryptionExtensions.cs
@@ -55,7 +55,7 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV3
                     return response;
                 }
 
-                bool requireDecrypt = response.GetType().GetCustomAttributes<WechatTenpaySensitiveAttribute>(inherit: true).Any();
+                bool requireDecrypt = Attribute.IsDefined(response.GetType(), typeof(WechatTenpaySensitiveAttribute));
                 if (requireDecrypt)
                 {
                     // 遍历并解密被标记为敏感数据的字段
diff --git a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Utilities/Internal/ReflectionUtility.cs b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Utilities/Internal/ReflectionUtility.cs
index 8e562a22..20b05ad7 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Utilities/Internal/ReflectionUtility.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Utilities/Internal/ReflectionUtility.cs
@@ -4,9 +4,24 @@ using System.Reflection;
 
 namespace SKIT.FlurlHttpClient.Wechat.TenpayV3.Utilities
 {
-    internal static class ReflectionUtility
+    internal static partial class ReflectionUtility
     {
-        public delegate (bool Modified, string NewValue) ReplacePropertyStringValueReplacementHandler(object target, PropertyInfo currentProp, string oldValue);
+        private static readonly Hashtable _typeProperties = new Hashtable();
+
+        private static PropertyInfo[] GetTypedProperties(Type type)
+        {
+            if (type == null) throw new ArgumentNullException(nameof(type));
+
+            string skey = type.AssemblyQualifiedName ?? type.GetHashCode().ToString();
+            PropertyInfo[]? properties = (PropertyInfo[]?)_typeProperties[skey];
+            if (properties == null)
+            {
+                properties = type.GetProperties(BindingFlags.Public | BindingFlags.Instance);
+                _typeProperties[skey] = properties;
+            }
+
+            return properties;
+        }
 
         public static void ReplacePropertyStringValue<T>(ref T obj, ReplacePropertyStringValueReplacementHandler replacement)
         {
@@ -28,7 +43,7 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV3.Utilities
             }
             else
             {
-                foreach (var childProp in objType.GetProperties(BindingFlags.Public | BindingFlags.Instance))
+                foreach (var childProp in GetTypedProperties(objType))
                 {
                     if (!childProp.CanWrite)
                         continue;
@@ -188,4 +203,9 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV3.Utilities
             }
         }
     }
+
+    partial class ReflectionUtility
+    {
+        public delegate (bool Modified, string NewValue) ReplacePropertyStringValueReplacementHandler(object target, PropertyInfo currentProp, string oldValue);
+    }
 }