diff --git a/packages/calendar/index.ts b/packages/calendar/index.ts
index d59114a0..3f2f63d4 100644
--- a/packages/calendar/index.ts
+++ b/packages/calendar/index.ts
@@ -67,11 +67,11 @@ VantComponent({
       observer: 'reset',
     },
     minDate: {
-      type: null,
+      type: Number,
       value: initialMinDate,
     },
     maxDate: {
-      type: null,
+      type: Number,
       value: initialMaxDate,
     },
     position: {