diff --git a/src/components/checkbox/checkbox-group.vue b/src/components/checkbox/checkbox-group.vue
index ee12cbd..85ec8c3 100644
--- a/src/components/checkbox/checkbox-group.vue
+++ b/src/components/checkbox/checkbox-group.vue
@@ -22,6 +22,9 @@
             size: {
                 validator (value) {
                     return oneOf(value, ['small', 'large', 'default']);
+                },
+                default () {
+                    return this.$IVIEW.size === '' ? 'default' : this.$IVIEW.size;
                 }
             }
         },
diff --git a/src/components/checkbox/checkbox.vue b/src/components/checkbox/checkbox.vue
index 869f388..5ef45b4 100644
--- a/src/components/checkbox/checkbox.vue
+++ b/src/components/checkbox/checkbox.vue
@@ -63,6 +63,9 @@
             size: {
                 validator (value) {
                     return oneOf(value, ['small', 'large', 'default']);
+                },
+                default () {
+                    return this.$IVIEW.size === '' ? 'default' : this.$IVIEW.size;
                 }
             },
             name: {
--
libgit2 0.21.4