diff --git a/bilibili-mall-cover-download.js b/bilibili-mall-cover-download.js
new file mode 100644
index 0000000..d3fabc1
--- /dev/null
+++ b/bilibili-mall-cover-download.js
@@ -0,0 +1,69 @@
+// ==UserScript==
+// @name         BiliBili 商城首图下载
+// @namespace    https://paul.ren
+// @version      0.1
+// @description  下载透明手办图片到本地，可供上传到网站
+// @author       You
+// @match        https://mall.bilibili.com/*
+// @icon         https://www.google.com/s2/favicons?sz=64&domain=bilibili.com
+// @grant        none
+// ==/UserScript==
+
+(function () {
+  'use strict';
+
+  const styles = document.createElement("style");
+  styles.innerHTML = "body { max-width: 600px; margin: auto; }";
+  document.body.appendChild(styles);
+
+  function downloadFile(url, filename) {
+    var xhr = new XMLHttpRequest();
+
+    xhr.open('GET', url, true);
+    xhr.responseType = 'blob';
+
+    xhr.onload = function () {
+      if (xhr.status === 200) {
+        var blob = xhr.response;
+        var link = document.createElement('a');
+        link.href = window.URL.createObjectURL(blob);
+        link.download = filename;
+        link.click();
+      }
+    };
+
+    xhr.send();
+  }
+
+  const getFirstImg = async () => {
+    await new Promise((resolve) => setTimeout(() => resolve(), 500));
+
+    const btn = document.querySelector(".bili-callapp-btn");
+
+    if (btn) {
+      const newBtn = document.createElement("div");
+      newBtn.className = "bili-callapp-btn";
+
+      btn.style = "display: none !important;";
+      newBtn.setAttribute('data-v-e55eac76', 1);
+      btn.parentElement.append(newBtn);
+
+      newBtn.innerHTML = "下载首图";
+      newBtn.onclick = (ev) => {
+        ev.preventDefault();
+        const img = document.querySelector(".silde-item");
+        const url = img.style.backgroundImage.replace("url(\"", "").replace("\")", "");
+
+        const href = new URL(location.href.replace("#noReffer", "&noReffer"));
+        const itemsId = href.searchParams.get("itemsId");
+
+        downloadFile(url, `${itemsId}.webp`);
+
+      }
+    }
+  }
+
+  if (location.href.includes("detail.html")) {
+    getFirstImg();
+  }
+})();