diff --git a/src/alias.txt b/src/alias.txt
index d541fae..e6811a1 100644
--- a/src/alias.txt
+++ b/src/alias.txt
@@ -198,9 +198,14 @@ function wdt() {
     testfile_size=2048
     echo -e "\n使用默认值: ${testfile_size}MB"
   fi
+  echo "------------"
+  echo "写入速度如下"
   time dd if=/dev/zero of=./testfile bs=1M count=${testfile_size} oflag=direct
+  echo "------------"
+  echo "读取速度如下"
   time dd if=./testfile of=/dev/null bs=1M
   rm ./testfile
+  echo "测试文件已删除"
 }
 
 function din() {