diff --git a/routes/api/iqiyi.js b/routes/api/iqiyi.js
index 89e930c..6fb3693 100644
--- a/routes/api/iqiyi.js
+++ b/routes/api/iqiyi.js
@@ -2,7 +2,6 @@ const axios = require("axios");
 const pako = require("pako");
 const {
 	time_to_second,
-	make_response,
 	content_template,
 } = require("./utils");
 const memory = require("../../utils/memory");
diff --git a/routes/danmaku.js b/routes/danmaku.js
index 4b35ad2..e40b190 100644
--- a/routes/danmaku.js
+++ b/routes/danmaku.js
@@ -26,13 +26,16 @@ const apiLimiter = rateLimit({
 	skip: (request, response) => allowlist.includes(request.ip),
 });
 
+// 返回对象{msg: "ok", title: "标题", content: []}
 async function build_response(url, req) {
+	// 循环找最终url
 	for (let q = new URLSearchParams(URL.parse(url).query); q.has("url");) {
 		console.log("Redirecting to", url);
 		url = q.get("url");
 		q = new URLSearchParams(URL.parse(url).query);
 	}
 	console.log("Real url:", url);
+	// 测试url是否能下载
 	try {
 		await axios.get(url, {
 			headers: { "Accept-Encoding": "gzip,deflate,compress" }
@@ -41,15 +44,18 @@ async function build_response(url, req) {
 		console.log(e);
 		return { msg: "传入的链接非法！请检查链接是否能在浏览器正常打开" };
 	}
+	// 循环找到对应的解析器
 	let fc = undefined;
 	for (let item of list) {
 		if (url.indexOf(item.domain) !== -1) {
 			fc = item;
 		}
 	}
+	// 找不到对应的解析器
 	if (fc === undefined) {
 		return { "msg": "不支持的视频网址" };
 	}
+	// 捕获所有错误并添加日志
 	let ret;
 	try {
 		ret = await fc.work(url);
diff --git a/utils/oss.js b/utils/oss.js
deleted file mode 100644
index 5b12528..0000000
--- a/utils/oss.js
+++ /dev/null
@@ -1,103 +0,0 @@
-const OSS = require("ali-oss");
-const path = require("path");
-const fastregion = "oss-accelerate";
-
-// 引入环境变量
-require("dotenv")
-	.config({ path: "../.env" });
-
-let client = new OSS({
-	region: process.env.ALI_OSS_REGION,
-	accessKeyId: process.env.ALIBABA_CLOUD_ACCESS_KEY_ID,
-	accessKeySecret: process.env.ALIBABA_CLOUD_ACCESS_KEY_SECRET,
-	bucket: process.env.OSS_BUCKET,
-});
-
-let fastclient = new OSS({
-	region: fastregion,
-	accessKeyId: process.env.ALIBABA_CLOUD_ACCESS_KEY_ID,
-	accessKeySecret: process.env.ALIBABA_CLOUD_ACCESS_KEY_SECRET,
-	bucket: process.env.OSS_BUCKET,
-});
-
-async function get(objname,isFast) {
-	try {
-		const result = isFast ? await fastclient.get(objname) : await client.get(objname);
-		return result.content.toString();
-	} catch (e) {
-		console.log(e);
-	}
-}
-
-async function putfile(objname, localfilename, headers) {
-	try {
-		const res = await client.put(objname,path.normalize(localfilename),{headers});
-		return res;
-	} catch(e) {
-		console.log(e);
-	}
-}
-
-async function put(objname, content, headers) {
-	try {
-		const result = await client.put(objname, new Buffer.from(content), { headers });
-		return result;
-	} catch (e) {
-		console.log(e);
-	}
-}
-
-async function head(objname,isfast) {
-	try {
-		const result = isfast ? await fastclient.head(objname) : await client.head(objname);
-		return result.res.headers;
-	} catch (e) {
-		console.log(e);
-	}
-}
-
-async function signurl(objname, isFast) {
-	try {
-		let result = isFast ? await fastclient.signatureUrl(objname):await client.signatureUrl(objname);
-		result = result.replace("http://", "//")
-		return result;
-	} catch (e) {
-		console.log(e);
-	}
-}
-
-async function list(prefix) {
-	const result = await client.list({
-		prefix,
-	});
-	return result;
-}
-
-async function putACL(key,acl = "public-read"){
-	client.putACL(key,acl);
-}
-
-module.exports = {
-	get,
-	put,
-	putfile,
-	head,
-	list,
-	signurl,
-	putACL
-};
-
-async function main() {
-	get("SUB/database.yaml",true);
-	put("SUB/test.txt", "中文");
-	head("SUB/database.yaml",true);
-	const url = await signurl("SUB/database.yaml", true);
-	console.log(url)
-}
-
-if (!module.parent) {
-	get("SUB/database.yaml");
-	put("SUB/test.txt", "中文");
-	head("SUB/database.yaml");
-	signurl("SUB/database.yaml", true);
-}