diff --git a/public/frps_404.html b/public/frps_404.html
new file mode 100644
index 0000000..dc9826a
--- /dev/null
+++ b/public/frps_404.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title>404</title>
+</head>
+<body>
+<h1 id="title">HyDEV Home Web Server</h1>
+<h2 id="subtitle">localhost:8080</h2>
+<div>This server is currently closed.</div>
+<div>现在什么都没开呦 _(:з」∠)_</div>
+</body>
+
+<style>
+  body
+  {
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      flex-direction: column;
+      height: 100%;
+      font-family: "Microsoft YaHei UI", Avenir, Helvetica, Arial, sans-serif;
+  }
+  html
+  {
+      height: 100%;
+  }
+  h1
+  {
+      margin-bottom: 0;
+  }
+  h2
+  {
+      margin-top: 0;
+      color: gray;
+      font-weight: lighter;
+      font-size: 1em;
+  }
+</style>
+</html>
