diff --git a/app/third/paymentService/wechat_service.go b/app/third/paymentService/wechat_service.go
index e6ddc48..16226e8 100644
--- a/app/third/paymentService/wechat_service.go
+++ b/app/third/paymentService/wechat_service.go
@@ -15,16 +15,22 @@ import (
 	"github.com/qit-team/snow-core/log/logger"
 	"net/url"
 	"strconv"
+	"sync"
 	"time"
 )
 
-var WxClientGroup = make(map[string]*wechat.ClientV3)
+var WxClientGroup sync.Map
+
+func WxClientGroupKey(wxConfig WxPay) string {
+	return fmt.Sprintf("%s%s", wxConfig.AppId, wxConfig.MchId)
+}
 
 // InitClient 使用提供的支付请求参数初始化微信客户端
 func InitClient(wxConfig WxPay) (*wechat.ClientV3, error) {
-	clientCache, ex := WxClientGroup[wxConfig.AppId]
+	key := WxClientGroupKey(wxConfig)
+	clientCache, ex := WxClientGroup.Load(key)
 	if ex {
-		return clientCache, nil
+		return clientCache.(*wechat.ClientV3), nil
 	}
 	// NewClientV3 初始化微信客户端 v3
 	// mchid：商户ID 或者服务商模式的 sp_mchid
@@ -51,7 +57,7 @@ func InitClient(wxConfig WxPay) (*wechat.ClientV3, error) {
 
 	// 打开Debug开关，输出日志，默认是关闭的
 	wxClient.DebugSwitch = gopay.DebugOn
-	WxClientGroup[wxConfig.AppId] = wxClient
+	WxClientGroup.Store(key, wxClient)
 	return wxClient, nil
 
 }