diff --git a/components/checkbox/Group.jsx b/components/checkbox/Group.jsx
index edf2a0a4c..6b4ece17f 100644
--- a/components/checkbox/Group.jsx
+++ b/components/checkbox/Group.jsx
@@ -32,7 +32,7 @@ export default {
   },
   watch: {
     value(val) {
-      this.sValue = val;
+      this.sValue = val || [];
     },
   },
   methods: {