diff --git a/untils/sign/sign.go b/untils/sign/sign.go
index 7597599..6747836 100644
--- a/untils/sign/sign.go
+++ b/untils/sign/sign.go
@@ -9,7 +9,7 @@ import (
 	"sort"
 )
 
-var filterKeys = []string{"sign", "extendParams", "msg"}
+var filterKeys = []string{"sign", "extendParams", "msg", "supplierOrderNo"}
 
 func GetSign(data map[string]interface{}, primary string) (string, error) {
 	filterData(&data)