diff --git a/business/partner/printer/xiaowm/xiaowm.go b/business/partner/printer/xiaowm/xiaowm.go
index 6490af14c..b4c42f4f2 100644
--- a/business/partner/printer/xiaowm/xiaowm.go
+++ b/business/partner/printer/xiaowm/xiaowm.go
@@ -136,10 +136,12 @@ func (c *PrinterHandler) PrintOrder(ctx *jxcontext.Context, store *model.Store,
 }
 
 func (c *PrinterHandler) RegisterPrinter(ctx *jxcontext.Context, printerNumber, notUsed, printerName string) (newID1, printerToken string, err error) {
-	if printerToken, err = api.XiaoWMAPI.AuthPrinter(printerNumber, "", ""); err == nil {
-		return printerNumber, printerToken, nil
+	if len(printerNumber) != len("7JizmSyiXNzkggaqU") {
+		err = fmt.Errorf("外卖管家打印机设备编号:%s长度不合法", printerNumber)
+	} else {
+		printerToken, err = api.XiaoWMAPI.AuthPrinter(printerNumber, "", "")
 	}
-	return "", "", err
+	return "", printerToken, err
 }
 
 func (c *PrinterHandler) UnregisterPrinter(ctx *jxcontext.Context, printerNumber, printerToken string) (err error) {