diff --git a/fold_torrent_file.js b/fold_torrent_file.js
new file mode 100644
index 0000000..9f506e2
--- /dev/null
+++ b/fold_torrent_file.js
@@ -0,0 +1,139 @@
+// ==UserScript==
+// @name         支持折叠种子文件
+// @namespace    https://github.com/lifegpc/userscript
+// @version      0.0.1
+// @description  支持折叠种子文件
+// @author       lifegpc
+// @match        https://dmhy.org/topics/view/*
+// @match        https://share.dmhy.org/topics/view/*
+// @icon         https://dmhy.org/favicon.ico
+// @grant        GM_addStyle
+// ==/UserScript==
+GM_addStyle(`.ftf_file_list td, th { border: #00aa00 1px solid; }
+.ftf_file_list {border-collapse: collapse;}`)
+const parse_size = (await import("https://esm.sh/filesize-parser@1.5.0?pin=v135")).default;
+/**
+ * 折叠种子文件
+ * @typedef {{name: string, size: number, children: TFile[], folded: true}} TFile
+ * @typedef {{path: string, size: number}} OFile
+ * @param {OFile[]} list
+ * @returns {TFile[]}
+ */
+function fold(list) {
+    /**@type {TFile[]} */
+    const re = [];
+    for (const f of list) {
+        const parts = f.path.split("/");
+        let cu = re;
+        parts.slice(0, -1).reduce((acc, cur) => {
+            acc.push(cur);
+            for (const p of acc) {
+                const file = cu.find((v) => v.name == p);
+                if (file) {
+                    file.size += f.size;
+                    cu = file.children;
+                } else {
+                    const newFile = { name: p, size: f.size, children: [], folded: true };
+                    cu.push(newFile);
+                    cu.sort((a, b) => a.name.localeCompare(b.name))
+                    cu = newFile.children;
+                }
+            }
+            return acc;
+        }, [])
+        const file = { name: parts[parts.length - 1], size: f.size, children: [], folded: true };
+        cu.push(file);
+        cu.sort((a, b) => a.name.localeCompare(b.name))
+    }
+    return re;
+}
+function try_parse_dmhy_bt() {
+    try {
+        const files = document.querySelectorAll("div.file_list li");
+        /**@type {OFile[]}*/
+        const re = [];
+        for (const f of files) {
+            const size = parse_size(f.querySelector("span.bt_file_size").innerText);
+            const path = f.querySelector("span.bt_file_size").previousSibling.textContent.trim();
+            re.push({ path, size });
+        }
+        return re;
+    } catch (e) {
+        return null;
+    }
+}
+function to_size(size) {
+    const units = ["B", "KiB", "MiB", "GiB"];
+    let i = 0;
+    while (size >= 1024 && i < units.length) {
+        size /= 1024;
+        i++;
+    }
+    return size.toFixed(2) + units[i];
+}
+function render() {
+    const table = document.createElement("table");
+    table.classList.add("ftf_file_list");
+    const tr = document.createElement("tr");
+    const name = document.createElement("th");
+    name.innerText = "文件名";
+    name.style.textAlign = "left";
+    tr.appendChild(name);
+    const size = document.createElement("th");
+    size.innerText = "大小";
+    tr.appendChild(size);
+    table.append(tr);
+    function renderv(list, indent=0) {
+        for (const f of list) {
+            const tr = document.createElement("tr");
+            const td = document.createElement("td");
+            let indent_d = "";
+            for (let i = 0; i < indent; i++) {
+                indent_d += "&nbsp;";
+            }
+            if (f.children.length) {
+                const a = document.createElement("a");
+                a.addEventListener('click', () => {
+                    f.folded = !f.folded;
+                    table.replaceWith(render());
+                })
+                a.href = "javascript:void(0)";
+                td.innerHTML = indent_d;
+                a.innerText = f.name;
+                td.append(a);
+            } else {
+                td.innerHTML = indent_d;
+                td.innerText += f.name;
+            }
+            tr.appendChild(td);
+            const td2 = document.createElement("td");
+            td2.innerText = to_size(f.size);
+            tr.appendChild(td2);
+            table.appendChild(tr);
+            if (f.children.length && !f.folded) {
+                renderv(f.children, indent + 4);
+            }
+        }   
+    }
+    renderv(folded);
+    return table;
+}
+function render_dmhy_bt() {
+    const file_list = document.querySelector("div.file_list");
+    if (!file_list) return;
+    file_list.replaceChildren(render());
+}
+let files = try_parse_dmhy_bt();
+let is_dmhy = false;
+if (files) {
+    is_dmhy = true;
+}
+if (!files) {
+    return;
+}
+console.log(files);
+const folded = fold(files);
+console.log(folded);
+if (is_dmhy) {
+    render_dmhy_bt();
+}