diff --git a/miniprogram/models/detail.js b/miniprogram/models/detail.js
index b69d6a1..45beeb3 100644
--- a/miniprogram/models/detail.js
+++ b/miniprogram/models/detail.js
@@ -49,7 +49,8 @@ class DetailModel {
     if (!goalRecords) return durationFormatText(0)
     let max = 0
     goalRecords.forEach(record => {
-      max = (record.time > max) ? record.time : max
+      let time = parseInt(record.time, 10)
+      max = (time > max) ? time : max
     })
     return durationFormatText(max)
   }