diff --git a/plugins/alipay_redpack/internal/alipay_redpack.go b/plugins/alipay_redpack/internal/alipay_redpack.go
index 229f008..6dfc0a0 100644
--- a/plugins/alipay_redpack/internal/alipay_redpack.go
+++ b/plugins/alipay_redpack/internal/alipay_redpack.go
@@ -20,7 +20,7 @@ const (
 const baseUri = "https://openapi.alipay.com/gateway.do"
 
 const (
-	// 支持幂等请求
+	// 支持幂等请求 https://opendocs.alipay.com/open/02byvi?pathHash=b367173b
 	orderMethod = "alipay.fund.trans.uni.transfer"
 	queryMethod = "alipay.fund.trans.common.query"
 )