diff --git a/plugins/weixin_cpn/internal/util.go b/plugins/weixin_cpn/internal/util.go
index 638577f..a5b5a5e 100644
--- a/plugins/weixin_cpn/internal/util.go
+++ b/plugins/weixin_cpn/internal/util.go
@@ -7,9 +7,31 @@ import (
 	"github.com/wechatpay-apiv3/wechatpay-go/core/option"
 	"github.com/wechatpay-apiv3/wechatpay-go/services/cashcoupons"
 	"github.com/wechatpay-apiv3/wechatpay-go/utils"
+	"sync"
 )
 
+var instance *cashcoupons.CouponApiService
+var once sync.Once
+var onceError error
+var onceErrorMutex sync.Mutex
+
 func getSrv(ctx context.Context, config *Config) (*cashcoupons.CouponApiService, error) {
+	onceErrorMutex.Lock()
+	defer onceErrorMutex.Unlock()
+
+	if onceError != nil {
+		instance = nil
+		onceError = nil
+	}
+
+	once.Do(func() {
+		instance, onceError = newInstance(ctx, config)
+	})
+
+	return instance, onceError
+}
+
+func newInstance(ctx context.Context, config *Config) (*cashcoupons.CouponApiService, error) {
 	mchPrivateKey, err := utils.LoadPrivateKeyWithPath(config.PrivateKeyPath)
 	if err != nil {
 		return nil, fmt.Errorf("load merchant private key error:%v", err)
diff --git a/plugins/weixin_cpn/internal/weixin_cpn_test.go b/plugins/weixin_cpn/internal/weixin_cpn_test.go
index 4fd9cac..ddeed96 100644
--- a/plugins/weixin_cpn/internal/weixin_cpn_test.go
+++ b/plugins/weixin_cpn/internal/weixin_cpn_test.go
@@ -63,7 +63,7 @@ func TestQuery(t *testing.T) {
 			return
 		}
 		fmt.Printf("%+v \n", got)
-		//assert.Equal(t, int(proto.Status_SUCCESS), int(got.Result.Status))
+		assert.Equal(t, int(proto.Status_SUCCESS), int(got.Result.Status))
 	})
 }