diff --git a/docs-cn/14-reference/03-connector/java.mdx b/docs-cn/14-reference/03-connector/java.mdx
index e4e68131c5983dcb2aea254e35814fcb10d30283..ddab9e5f24c64e51e82cad6e299f3ea0d741b349 100644
--- a/docs-cn/14-reference/03-connector/java.mdx
+++ b/docs-cn/14-reference/03-connector/java.mdx
@@ -199,7 +199,7 @@ url 中的配置参数如下：
 - user：登录 TDengine 用户名，默认值 'root'。
 - password：用户登录密码，默认值 'taosdata'。
 - batchfetch: true：在执行查询时批量拉取结果集；false：逐行拉取结果集。默认值为：false。逐行拉取结果集使用 HTTP 方式进行数据传输。从 taos-jdbcdriver-2.0.38 和 TDengine 2.4.0.12 版本开始，JDBC REST 连接增加批量拉取数据功能。taos-jdbcdriver 与 TDengine 之间通过 WebSocket 连接进行数据传输。相较于 HTTP，WebSocket 可以使 JDBC REST 连接支持大数据量查询，并提升查询性能。
-- charset: 当开启批量拉取数据时，指定解析字符串数据的字符集。默认为 UTF-8。
+- charset: 当开启批量拉取数据时，指定解析字符串数据的字符集。
 - batchErrorIgnore：true：在执行 Statement 的 executeBatch 时，如果中间有一条 SQL 执行失败，继续执行下面的 SQL 了。false：不再执行失败 SQL 后的任何语句。默认值为：false。
 
 **注意**：部分配置项（比如：locale、timezone）在 REST 连接中不生效。
diff --git a/docs-en/14-reference/03-connector/java.mdx b/docs-en/14-reference/03-connector/java.mdx
index 9d2c5cd327f1459c3ae6bd44b4f67cffb3a8068a..6c40f753bee0b30a1ce9187e24dd78cc85c23602 100644
--- a/docs-en/14-reference/03-connector/java.mdx
+++ b/docs-en/14-reference/03-connector/java.mdx
@@ -197,7 +197,7 @@ The configuration parameters in the URL are as follows.
 - user: Login TDengine user name, default value 'root'.
 - password: user login password, default value 'taosdata'.
 - batchfetch: true: pull the result set in batch when executing the query; false: pull the result set row by row. The default value is false. batchfetch uses HTTP for data transfer. The JDBC REST connection supports bulk data pulling function in taos-jdbcdriver-2.0.38 and TDengine 2.4.0.12 and later versions. taos-jdbcdriver and TDengine transfer data via WebSocket connection. Compared with HTTP, WebSocket enables JDBC REST connection to support large data volume querying and improve query performance.
-- charset: specify the charset to parse the string, this parameter is valid only when set batchfetch to true. Default value is UTF-8.
+- charset: specify the charset to parse the string, this parameter is valid only when set batchfetch to true.
 - batchErrorIgnore: true: when executing executeBatch of Statement, if one SQL execution fails in the middle, continue to execute the following SQL. false: no longer execute any statement after the failed SQL. The default value is: false.
 
 **Note**: Some configuration items (e.g., locale, timezone) do not work in the REST connection.