diff --git a/src/alias.txt b/src/alias.txt
index e6811a1..9190e5c 100644
--- a/src/alias.txt
+++ b/src/alias.txt
@@ -198,13 +198,14 @@ function wdt() {
     testfile_size=2048
     echo -e "\n使用默认值: ${testfile_size}MB"
   fi
-  echo "------------"
-  echo "写入速度如下"
+  echo "-------------"
+  echo "写入速度如下:"
   time dd if=/dev/zero of=./testfile bs=1M count=${testfile_size} oflag=direct
-  echo "------------"
-  echo "读取速度如下"
+  echo "-------------"
+  echo "读取速度如下:"
   time dd if=./testfile of=/dev/null bs=1M
   rm ./testfile
+  echo "-------------"
   echo "测试文件已删除"
 }