diff --git a/src/main/java/com/qs/serve/modules/tbs/entity/TbsActivity.java b/src/main/java/com/qs/serve/modules/tbs/entity/TbsActivity.java
index dedb9dd2..f11fade6 100644
--- a/src/main/java/com/qs/serve/modules/tbs/entity/TbsActivity.java
+++ b/src/main/java/com/qs/serve/modules/tbs/entity/TbsActivity.java
@@ -255,9 +255,7 @@ public class TbsActivity implements Serializable {
             try {
                 LocalDate now = LocalDate.now();
                 LocalDate end = this.getPreCheckDate();
-                Period duration;
-                duration = Period.between(now,end);
-                overdueWarningDays = (long)duration.getDays();
+                overdueWarningDays = ChronoUnit.DAYS.between(now,end);
             } catch (Exception e) {
                 e.printStackTrace();
             }