diff --git a/src/modules/network_element/controller/ne_license.go b/src/modules/network_element/controller/ne_license.go
index 2ea9da3b..fad2e0c4 100644
--- a/src/modules/network_element/controller/ne_license.go
+++ b/src/modules/network_element/controller/ne_license.go
@@ -198,7 +198,7 @@ func (s *NeLicenseController) State(c *gin.Context) {
 		c.JSON(200, result.ErrMsg(i18n.TKey(language, "app.common.noNEInfo")))
 		return
 	}
-	if neState, err := neService.NeState(neInfo); err == nil {
+	if neState, err := neService.NeState(neInfo); err == nil && neState["sn"] != nil {
 		neLicense.Status = "1"
 		neLicense.SerialNum = fmt.Sprint(neState["sn"])
 		neLicense.ExpiryDate = fmt.Sprint(neState["expire"])