diff --git a/electrmangnetic/src/main/java/com/electromagnetic/industry/software/manage/config/ElePropertyConfig.java b/electrmangnetic/src/main/java/com/electromagnetic/industry/software/manage/config/ElePropertyConfig.java
index a57527d..8fc7b42 100644
--- a/electrmangnetic/src/main/java/com/electromagnetic/industry/software/manage/config/ElePropertyConfig.java
+++ b/electrmangnetic/src/main/java/com/electromagnetic/industry/software/manage/config/ElePropertyConfig.java
@@ -44,8 +44,8 @@ public class ElePropertyConfig {
     private String backupMysqlScriptPath;
 
     @Getter
-    @Value("${tmp.file.store.days}")
-    private int tmpFileStoreDays;
+    @Value("${tmp.file.store.hour}")
+    private int tmpFileStoreHour;
 
     @Getter
     @Value("${backup.remote.host}")
diff --git a/electrmangnetic/src/main/java/com/electromagnetic/industry/software/manage/tasks/BackupTask.java b/electrmangnetic/src/main/java/com/electromagnetic/industry/software/manage/tasks/BackupTask.java
index 53c2d37..94245ed 100644
--- a/electrmangnetic/src/main/java/com/electromagnetic/industry/software/manage/tasks/BackupTask.java
+++ b/electrmangnetic/src/main/java/com/electromagnetic/industry/software/manage/tasks/BackupTask.java
@@ -135,7 +135,7 @@ public class BackupTask {
 
     @Scheduled(cron = "0 0 3 * * ?")
     public void deleteTmpFile() {
-        DateTime backDaysTime = DateUtil.offsetDay(new Date(), -elePropertyConfig.getTmpFileStoreDays());
+        DateTime backDaysTime = DateUtil.offsetHour(new Date(), -elePropertyConfig.getTmpFileStoreHour());
         FileFilter filter = file -> file.lastModified() < backDaysTime.getTime();
         List<File> files = FileUtil.loopFiles(elePropertyConfig.getEleTmpPath(), filter);
         for (File file : files) {
diff --git a/electrmangnetic/src/main/resources/application.properties b/electrmangnetic/src/main/resources/application.properties
index 60f0f82..8ad5e84 100644
--- a/electrmangnetic/src/main/resources/application.properties
+++ b/electrmangnetic/src/main/resources/application.properties
@@ -32,7 +32,7 @@ data.repo.upload.path=/szsd/data/eleData/dev/repo_upload/
 data.repo.download.path=/szsd/data/eleData/dev/repo_download/
 prj.folder.max.length=6
 # backupFiles
-tmp.file.store.days=7
+tmp.file.store.hour=48
 backup.remote.host=127.0.0.1
 backup.remote.port=1111
 backup.mysql.path=/workspace/mysqlbak/test