diff --git a/README.md b/README.md
index 16de673..45990af 100755
--- a/README.md
+++ b/README.md
@@ -69,13 +69,13 @@ iOS 9系统策略更新，限制了http协议的访问，此外应用需要在
 ```plist
 <key>LSApplicationQueriesSchemes</key>
 <array>
-    <string>weixin</string>
-    <string>weixinULAPI</string>
+	<string>weixin</string>
+	<string>weixinULAPI</string>
 </array>
 <key>NSAppTransportSecurity</key>
 <dict>
-    <key>NSAllowsArbitraryLoads</key>
-    <true/>
+	<key>NSAllowsArbitraryLoads</key>
+	<true/>
 </dict>
 ```
 
@@ -94,12 +94,10 @@ dependencies:
   wechat_kit: ^${latestTag}
 ```
 
-使用包含 iOS 支付：
+若需要不包含支付的 iOS SDK，请修改项目下的 `ios/Podfile`：
 
-```
-# 参考 https://github.com/RxReader/wechat_kit/blob/master/example/ios/Podfile
-# 默认 no_pay
-$WechatKitSubspec = 'pay'
+```diff 
++ $WechatKitSubspec = 'no_pay'
 ```
 
 * snapshot
diff --git a/example/ios/Podfile b/example/ios/Podfile
index cf0c493..5d04ce4 100644
--- a/example/ios/Podfile
+++ b/example/ios/Podfile
@@ -27,8 +27,8 @@ require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelpe
 
 flutter_ios_podfile_setup
 
-# 默认 no_pay
-$WechatKitSubspec = 'pay'
+# 默认 pay
+# $WechatKitSubspec = 'no_pay'
 
 target 'Runner' do
   flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
diff --git a/ios/wechat_kit.podspec b/ios/wechat_kit.podspec
index 9608d54..b06d160 100644
--- a/ios/wechat_kit.podspec
+++ b/ios/wechat_kit.podspec
@@ -6,15 +6,15 @@
 if defined?($WechatKitSubspec)
   wechat_kit_subspec = $WechatKitSubspec
 else
-  wechat_kit_subspec = 'no_pay'
+  wechat_kit_subspec = 'pay'
 end
 
 Pod::Spec.new do |s|
   s.name             = 'wechat_kit'
   s.version          = '3.2.0'
-  s.summary          = 'WeChat SDKs as Flutter plugin.'
+  s.summary          = 'The Flutter plugin for WeChat SDKs.'
   s.description      = <<-DESC
-A powerful Flutter plugin allowing developers to auth/share/pay with natvie Android & iOS WeChat SDKs.
+A powerful Flutter plugin allowing developers to auth/pay/share with native Android & iOS WeChat SDKs.
                        DESC
   s.homepage         = 'https://github.com/RxReader/wechat_kit'
   s.license          = { :file => '../LICENSE' }
diff --git a/lib/src/wechat.dart b/lib/src/wechat.dart
index 00bd024..756ac7c 100755
--- a/lib/src/wechat.dart
+++ b/lib/src/wechat.dart
@@ -636,11 +636,13 @@ class Wechat {
     );
   }
 
-  /// 支付 - 不含「iOS 支付」调用会直接抛出异常 No implementation [MissingPluginException]
+  /// 支付
+  ///
   /// 参数说明：https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=9_12&index=2
   ///
-  /// # 默认 no_pay，参考 https://github.com/RxReader/wechat_kit/blob/master/example/ios/Podfile
-  /// $WechatKitSubspec = 'pay'
+  /// * 默认包含支付，参考 https://github.com/RxReader/wechat_kit/blob/master/example/ios/Podfile
+  ///   修改 `$WechatKitSubspec = 'no_pay'` 可切换为不包含支付。
+  /// * 不含「iOS 支付」调用会抛出 [MissingPluginException]。
   Future<void> pay({
     required String appId,
     required String partnerId,