diff --git a/project/Guess-number/Leonhard.java b/project/Guess-number/Leonhard.java
new file mode 100644
index 0000000000000000000000000000000000000000..08392bb32100eb37b7d080f7f5bed30894776950
--- /dev/null
+++ b/project/Guess-number/Leonhard.java
@@ -0,0 +1,25 @@
+import java.util.Random;
+import java.util.Scanner;
+public class Main {
+    public static void main(String[] args) {
+        Random r =new Random();
+        int number=r.nextInt(100)+1;
+        while(true) {
+            System.out.println("请输入你要猜的数字");
+            Scanner sc = new Scanner(System.in);
+            int guessnumber = sc.nextInt();
+
+            if (guessnumber > number) {
+                System.out.println("你猜的数字" + guessnumber + "大了");
+
+            } else if (guessnumber < number) {
+                System.out.println("你猜的数字" + guessnumber + "小了");
+
+            } else {
+                System.out.println("恭喜 你，猜对了");
+                break;
+            }
+        }
+
+    }
+}
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