diff --git a/src/models/CheckIn.ts b/src/models/CheckIn.ts
index 5e19ff9..eafb777 100644
--- a/src/models/CheckIn.ts
+++ b/src/models/CheckIn.ts
@@ -45,10 +45,17 @@ export class CheckInClass extends BaseModule {
     const preDayEvent = await CheckIn.findOne({ from: event.from, dateTag: preDay })
     if (preDayEvent) {
       event.count = preDayEvent.count + 1
+    } else {
+      event.count = 1
+    }
+    const pre = await CheckIn.findOne({ from: event.from }).sort({ _id: -1 })
+    let maxSeq = 1
+    if (pre) {
+      maxSeq = pre.maxSeq
     }
     const total = await CheckIn.countDocuments({ from: event.from })
     event.total = total + 1
-    event.maxSeq = Math.max(event.count, preDayEvent.maxSeq || 1)
+    event.maxSeq = Math.max(event.count, maxSeq)
     try {
       await CheckIn.insertOrUpdate({ from: event.from, dateTag: event.dateTag }, event)
     } catch (err) {