diff --git a/day03/src/com/inmind/dowhile05/Demo10.java b/day03/src/com/inmind/dowhile05/Demo10.java
new file mode 100644
index 0000000..14ad90a
--- /dev/null
+++ b/day03/src/com/inmind/dowhile05/Demo10.java
@@ -0,0 +1,30 @@
+package com.inmind.dowhile05;
+/*
+循环变量初始化①
+do{
+        循环体③
+        修改循环变量④
+}while(循环条件②);
+
+执行顺序：①③④>②③④>②③④…②不满足为止。
+比较特殊：优先执行一次循环体语句
+*/
+public class Demo10 {
+    public static void main(String[] args) {
+        //1~10
+        int i = 1;
+        do{
+            System.out.println(i);
+            i++;
+        }while(i <=10);
+
+        System.out.println("-------------------------");
+        //10~1
+        int j = 10;
+        do {
+            System.out.println(j);
+            j--;
+        }while (j >= 1);
+        System.out.println("程序结束");
+    }
+}