diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index 3ca17a4..db34ebe 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -1 +1,19 @@
-spring.application.name=backend
+# ??MySQL??
+spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
+spring.datasource.url=jdbc:mysql://localhost:3306/groupone_db\
+?useSSL=false\
+&serverTimezone=Asia/Shanghai\
+&characterEncoding=utf8\
+&allowPublicKeyRetrieval=true
+
+spring.datasource.username=root
+spring.datasource.password=Rfw@2935
+
+# ???????????
+spring.datasource.hikari.maximum-pool-size=10
+spring.datasource.hikari.minimum-idle=5
+spring.datasource.hikari.idle-timeout=600000
+spring.datasource.hikari.connection-timeout=30000
+
+# ???? MyBatis ?????
+mybatis.configuration.map-underscore-to-camel-case=true
\ No newline at end of file