diff --git a/utils/index.js b/utils/index.js
index d0388e8..5551741 100644
--- a/utils/index.js
+++ b/utils/index.js
@@ -1,12 +1,15 @@
 import env from '@/env/index.js'
 import store from '@/store/index.js'
-import { isDate } from './is.js'
+import { isDate, isString } from './is.js'
 /**
  * 日期格式化，样例 yyyy-mm-dd hh:MM:ss
  * @param date Date 需要转换的日期
  * @param fmt string 转化的格式 yyyy-mm-dd hh:MM:ss
  */
 export const dateTimeFormat = (date, fmt) => {
+  if (isString(date)) {
+    date = date.replace(/-/g, '/')
+  }
   if (!isDate(date)) {
     date = new Date(date)
   }
@@ -157,9 +160,15 @@ let _boundaryCheckingState = true
  * @returns 时间差对象
  */
 export const difTime = (time, target) => {
+  if (isString(time)) {
+    time = time.replace(/-/g, '/')
+  }
+  if (isString(target)) {
+    target = target.replace(/-/g, '/')
+  }
   let begin = new Date(time).getTime()
   // 兼容ios时间
-  let end = new Date(target.replace(/-/g, '/')).getTime()
+  let end = new Date(target).getTime()
   let beyond = begin < end ? false : true
   let diff = Math.abs(begin - end)
   // 计算天数