diff --git a/backend/shop/__pycache__/admin.cpython-312.pyc b/backend/shop/__pycache__/admin.cpython-312.pyc
index 0d97ef1..d7f938d 100644
Binary files a/backend/shop/__pycache__/admin.cpython-312.pyc and b/backend/shop/__pycache__/admin.cpython-312.pyc differ
diff --git a/backend/shop/admin.py b/backend/shop/admin.py
index fa15012..45e3192 100644
--- a/backend/shop/admin.py
+++ b/backend/shop/admin.py
@@ -54,20 +54,28 @@ class ProductFeatureInline(TabularInline):
 
 @admin.register(WeChatPayConfig)
 class WeChatPayConfigAdmin(ModelAdmin):
-    list_display = ('app_id', 'mch_id', 'is_active', 'notify_url')
+    list_display = ('app_id', 'mch_id', 'is_active', 'notify_url', 'updated_at_display')
     list_filter = ('is_active',)
     search_fields = ('app_id', 'mch_id')
+    
+    def updated_at_display(self, obj):
+        # 假设模型没有 updated_at，如果有可以显示，这里仅作占位或移除
+        return "N/A"
+    updated_at_display.short_description = "更新时间"
+
     fieldsets = (
-        ('基本配置', {
-            'fields': ('app_id', 'mch_id', 'is_active')
+        ('核心配置 (登录与支付)', {
+            'fields': ('app_id', 'app_secret', 'mch_id', 'is_active'),
+            'description': 'AppID 和 AppSecret 是小程序登录和支付的基础凭证。请确保 AppID 与小程序后台一致 (项目中优先使用 wxdf2ca73e6c0929f0)。'
         }),
         ('微信支付 V3 安全配置 (推荐)', {
             'fields': ('apiv3_key', 'mch_cert_serial_no', 'mch_private_key'),
             'description': '使用 Native 支付必须配置这些项。私钥可以粘贴在这里，或者放在 backend/certs/apiclient_key.pem 文件中。'
         }),
         ('微信支付 V2 安全配置 (旧版)', {
-            'fields': ('api_key', 'app_secret'),
+            'fields': ('api_key',),
             'classes': ('collapse',),
+            'description': '仅旧版支付接口需要 API Key (V2)。'
         }),
         ('回调配置', {
             'fields': ('notify_url',)