diff --git a/docs/en/developer-guide/fe-eclipse-dev.md b/docs/en/developer-guide/fe-eclipse-dev.md
index 5fecccf54058ab..1445ec24b32c76 100644
--- a/docs/en/developer-guide/fe-eclipse-dev.md
+++ b/docs/en/developer-guide/fe-eclipse-dev.md
@@ -124,6 +124,8 @@ You can directly start an FE process in Eclipse to facilitate debugging the code
 
 4. Right-click `PaloFe.java` and select `Run As -> Java Application` to start FE.
 
+To run a UT, a FE service will be started at first. And then, UT cases execute as client and test corresponding logics. When errors occur, only client logs will be print in UT logs. If you need more information from **server logs**, you can view logs in `${DORIS_HOME}/fe/mocked`.
+
 ## Code Update
 
 1. Update lexical and grammar files or proto and thrift files
diff --git a/docs/zh-CN/developer-guide/fe-eclipse-dev.md b/docs/zh-CN/developer-guide/fe-eclipse-dev.md
index b2b6fca435a7ee..099a2ab9708670 100644
--- a/docs/zh-CN/developer-guide/fe-eclipse-dev.md
+++ b/docs/zh-CN/developer-guide/fe-eclipse-dev.md
@@ -99,6 +99,8 @@ java.lang.Exception: Method xxxx should have no parameters
 
 之后在运行 `Run/Debug` 即可。
 
+FE的单元测试会首先启动一个FE服务，然后由测试用例作为客户端执行相应的测试逻辑。在UT报错时，UT的日志只会打印相应的客户端日志，如果需要**查看服务端日志**，可以在路径${DORIS_HOME}/fe/mocked下查看。
+
 ## 运行 FE
 
 可以在 Eclipse 中直接启动一个 FE 进程，方便对代码进行调试。