diff --git a/tutorials/training/source_en/advanced_use/custom_debugging_info.md b/tutorials/training/source_en/advanced_use/custom_debugging_info.md
index 9f6bed8d549ab89229e7f67ced78cecd2ab88dea..53a4b6c6100fdf4b7cd8f7030803ce925eb958ba 100644
--- a/tutorials/training/source_en/advanced_use/custom_debugging_info.md
+++ b/tutorials/training/source_en/advanced_use/custom_debugging_info.md
@@ -337,7 +337,8 @@ MindSpore uses glog to output logs. The following environment variables are comm
     The environment variable specifies the log output path.  
     If `GLOG_logtostderr` is set to 0, value of this variable must be specified.  
     If `GLOG_log_dir` is specified and the value of `GLOG_logtostderr` is 1, logs are output to the screen but not to a file.  
-    Logs of C++ and Python will be output to different files. The file name of C++ log complies with the naming rule of `GLOG` log file. Here, the name is `mindspore.MachineName.UserName.log.LogLevel.Timestamp`. The file name of Python log is `mindspore.log`.
+    Logs of C++ and Python will be output to different files. The file name of C++ log complies with the naming rule of `GLOG` log file. Here, the name is `mindspore.MachineName.UserName.log.LogLevel.Timestamp`. The file name of Python log is `mindspore.log`.  
+    `GLOG_log_dir` can only contains characters such as uppercase letters, lowercase letters, digits, ".", ":", "-", "_", "/" and "\\".
 
 - `MS_SUBMODULE_LOG_v`
 
diff --git a/tutorials/training/source_zh_cn/advanced_use/custom_debugging_info.md b/tutorials/training/source_zh_cn/advanced_use/custom_debugging_info.md
index ca00b3782f4e9ddef7baf4ff8d003af3c22877a6..1b0adc5fa6217662efd045b4d0891354fa984ca0 100644
--- a/tutorials/training/source_zh_cn/advanced_use/custom_debugging_info.md
+++ b/tutorials/training/source_zh_cn/advanced_use/custom_debugging_info.md
@@ -366,7 +366,8 @@ MindSpore采用glog来输出日志，常用的几个环境变量如下：
     该环境变量指定日志输出的路径。  
     若`GLOG_logtostderr`的值为0，则必须设置此变量。  
     若指定了`GLOG_log_dir`且`GLOG_logtostderr`的值为1时，则日志输出到屏幕，不输出到文件。  
-    C++和Python的日志会被输出到不同的文件中，C++日志的文件名遵从`GLOG`日志文件的命名规则，这里是`mindspore.机器名.用户名.log.日志级别.时间戳.进程ID`，Python日志的文件名为`mindspore.log.进程ID`。
+    C++和Python的日志会被输出到不同的文件中，C++日志的文件名遵从`GLOG`日志文件的命名规则，这里是`mindspore.机器名.用户名.log.日志级别.时间戳.进程ID`，Python日志的文件名为`mindspore.log.进程ID`。  
+    `GLOG_log_dir`只能包含大小写字母、数字、".", ":", "-", "_", "/", "\\"等字符。
 
 - `MS_SUBMODULE_LOG_v`