diff --git a/src/components/date-picker/base/date-table.vue b/src/components/date-picker/base/date-table.vue
index b1dcd3b5..09970b43 100644
--- a/src/components/date-picker/base/date-table.vue
+++ b/src/components/date-picker/base/date-table.vue
@@ -36,10 +36,8 @@
             },
         },
         data () {
-            const weekStartDay = Number(this.t('i.datepicker.weekStartDay'));
             return {
                 prefixCls: prefixCls,
-                calendar: new jsCalendar.Generator({onlyDays: !this.showWeekNumbers, weekStart: weekStartDay})
             };
         },
         computed: {
@@ -51,6 +49,10 @@
                     }
                 ];
             },
+            calendar(){
+                const weekStartDay = Number(this.t('i.datepicker.weekStartDay'));
+                return new jsCalendar.Generator({onlyDays: !this.showWeekNumbers, weekStart: weekStartDay});
+            },
             headerDays () {
                 const weekStartDay = Number(this.t('i.datepicker.weekStartDay'));
                 const translatedDays = ['sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat'].map(item => {