diff --git a/README.md b/README.md
index 7a9d1e1..64cba70 100644
--- a/README.md
+++ b/README.md
@@ -115,8 +115,7 @@ Run the following command：
 | MYSQL_SERVICE_USER | username of  database |  |
 | MYSQL_SERVICE_PASSWORD | password of  database |  |
 | MYSQL_DATABASE_NUM      | It indicates the number of database             | default :**1**                      |
-| MYSQL_SERVICE_DB_PARAM      | Database url parameter             | default : **
-characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false**                      |
+| MYSQL_SERVICE_DB_PARAM      | Database url parameter             |default:**characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false**                      |
 | JVM_XMS      |  -Xms             | default :1g                          |
 | JVM_XMX      |  -Xmx            | default :1g                          |
 | JVM_XMN      |  -Xmn           | default :512m                          |