diff --git a/electrmangnetic/src/main/resources/application.properties b/electrmangnetic/src/main/resources/application.properties
index be0fe58..8be42af 100644
--- a/electrmangnetic/src/main/resources/application.properties
+++ b/electrmangnetic/src/main/resources/application.properties
@@ -1,4 +1,4 @@
-#required
+# spring framework
 spring.application.name=electromagnetic-data
 spring.datasource.typd=com.alibaba.druid.pool.DruidDataSource
 spring.datasource.url=jdbc:mysql://139.196.179.195:3306/em_data_dev?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=GMT%2B8&allowMultiQueries=true&rewriteBatchedStatements=true
@@ -6,12 +6,17 @@ spring.datasource.username=em_user_dev
 spring.datasource.password=Szsd#2O25$dev
 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
 spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
-mybatis-plus.mapper-locations=classpath:sqlmapper/*.xml
-mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl
+spring.jackson.time-zone=GMT+8
 spring.servlet.multipart.max-file-size=500MB
 spring.servlet.multipart.max-request-size=500MB
+
+# mybatis
+mybatis-plus.mapper-locations=classpath:sqlmapper/*.xml
+mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl
 pagehelper.helperDialect=mysql
 pagehelper.reasonable=false
+
+# app
 server.port=12396
 
 winPrefix: D:/tmp
@@ -30,7 +35,8 @@ 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
-spring.jackson.time-zone=GMT+8
+
+# backup
 tmp.file.store.days=7
 backup.remote.host=127.0.0.1
 backup.remote.port=1111
\ No newline at end of file