diff --git a/templates/index.html b/templates/index.html
new file mode 100644
index 0000000..c8bec8d
--- /dev/null
+++ b/templates/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <script src="/static/js/index.js" type="text/javascript"></script>
+    <title>四则运算</title>
+</head>
+<body>
+    <button type="submit" onclick="begin();">开始</button>
+</body>
+</html>
\ No newline at end of file
