diff --git a/docs/source/en/core/logger.md b/docs/source/en/core/logger.md
index c60fe4faf3..be45b041f9 100644
--- a/docs/source/en/core/logger.md
+++ b/docs/source/en/core/logger.md
@@ -128,6 +128,15 @@ exports.logger = {
 };
 ```
 
+## Format
+Use JSON as the output log format, make it easier to parse.
+```js
+// config/config.${env}.js
+exports.logger = {
+  outputJSON: true,
+};
+```
+
 ## Log Level
 
 Logs are designed in 5 levels, including `NONE`, `DEBUG`, `INFO`, `WARN` and `ERROR`. For inspecting in development, they will also be written into files and printed into terminal as well.
diff --git a/docs/source/zh-cn/core/logger.md b/docs/source/zh-cn/core/logger.md
index d5920cdc12..0c79adac01 100644
--- a/docs/source/zh-cn/core/logger.md
+++ b/docs/source/zh-cn/core/logger.md
@@ -133,6 +133,15 @@ exports.logger = {
 };
 ```
 
+## 日志文件格式
+设置输出格式为JSON,方便日志监控系统分析
+```js
+// config/config.${env}.js
+exports.logger = {
+  outputJSON: true,
+};
+```
+
 ## 日志级别
 
 日志分为 `NONE`，`DEBUG`，`INFO`，`WARN` 和 `ERROR` 5 个级别。