diff --git a/uni_modules/oct-calendar-picker/components/oct-calendar-picker/oct-calendar-picker.vue b/uni_modules/oct-calendar-picker/components/oct-calendar-picker/oct-calendar-picker.vue
index c604c13..7beec5b 100644
--- a/uni_modules/oct-calendar-picker/components/oct-calendar-picker/oct-calendar-picker.vue
+++ b/uni_modules/oct-calendar-picker/components/oct-calendar-picker/oct-calendar-picker.vue
@@ -248,7 +248,7 @@
 				let year   = moment().get('year')
 				let month  = moment().get('month') + 1
 				let today  = moment().get('date')
-				let start  = moment([year, month, today]).month(-(num - 2)).format('YYYY-MM-DD')
+				let start  = moment().subtract(num, 'month').format('YYYY-MM-DD')
 				let ymdArr = start.split('-')
 				
 				let { months, days } = this.getNewYM(ymdArr[0], ymdArr[1])