diff --git a/utils/sign.go b/utils/sign.go
index fbac279..68ef661 100644
--- a/utils/sign.go
+++ b/utils/sign.go
@@ -41,7 +41,7 @@ func VerifySignature(paramsMap map[string]interface{}, receivedTimestamp, receiv
 			return errors.New("签名错误")
 		}
 
-		if currentTime-timestamp > 300 {
+		if currentTime-timestamp > 1500 {
 			return errors.New("签名超时")
 		}
 	}