diff --git a/httpclient/client.go b/httpclient/client.go
index 508288f..007f5a6 100644
--- a/httpclient/client.go
+++ b/httpclient/client.go
@@ -9,6 +9,7 @@ package httpclient
 
 import (
 	"fmt"
+	"net"
 	"net/http"
 	"strings"
 	"time"
@@ -271,7 +272,7 @@ func (hc *HttpClient) requestBackendApi() *define.Response {
 		response.RequestCount++
 		if response.RestyResponse, err = hc.request.Send(); nil != err {
 			errType := define.RequestFailTypeSend
-			if strings.Contains(strings.ToLower(err.Error()), "client.timeout exceeded while awaiting headers") {
+			if _, ok := err.(net.Error); ok {
 				// 请求超时
 				errType = define.RequestFailTypeTimeoutError
 			}