diff --git a/lib/middleware/parameter.js b/lib/middleware/parameter.js
index 4df7e3fbb1..b93f487446 100644
--- a/lib/middleware/parameter.js
+++ b/lib/middleware/parameter.js
@@ -19,158 +19,165 @@ module.exports = async (ctx, next) => {
             throw Error('this route is empty, please check the original site or <a href="https://github.com/DIYgod/RSSHub/issues/new/choose">create an issue</a>');
         }
 
-        if (ctx.query && ctx.query.mode && ctx.query.mode.toLowerCase() === 'fulltext') {
-            const tasks = ctx.state.data.item.map(async (item) => {
-                const { link, author, description } = item;
-                const parsed_result = await ctx.cache.tryGet(`mercury-cache-${link}`, async () => {
-                    // if parser failed, return default description and not report error
-                    try {
-                        const res = await got(link);
-                        const $ = cheerio.load(res.data);
-                        const result = await mercury_parser.parse(link, {
-                            html: $.html(),
-                        });
-                        return result;
-                    } catch (e) {
-                        // no-empty
-                    }
-                });
-
-                item.author = author || (parsed_result ? parsed_result.author : '');
-                item.description = parsed_result ? parsed_result.content : description;
-            });
-            await Promise.all(tasks);
-        }
-
-        // handle description
-        if (ctx.state.data.item && ctx.state.data.item.length) {
-            ctx.state.data.item.forEach((item) => {
-                if (item.description) {
-                    const $ = cheerio.load(item.description);
-                    let baseUrl = item.link || ctx.state.data.link;
-
-                    if (baseUrl && !baseUrl.match(/^https?:\/\//)) {
-                        if (baseUrl.match(/^\/\//)) {
-                            baseUrl = 'http:' + baseUrl;
-                        } else {
-                            baseUrl = 'http://' + baseUrl;
-                        }
-                    }
-
-                    $('script').remove();
-
-                    $('a').each((_, ele) => {
-                        const $ele = $(ele);
-
-                        // absolute link
-                        if (baseUrl) {
-                            try {
-                                $ele.attr('href', new URL($ele.attr('href'), baseUrl).href);
-                            } catch (e) {
-                                // no-empty
-                            }
-                        }
-                    });
-
-                    $('img').each((_, ele) => {
-                        const $ele = $(ele);
-
-                        // fix lazyload
-                        if (!$ele.attr('src')) {
-                            for (const key in ele.attribs) {
-                                const value = ele.attribs[key].trim();
-                                if (['.gif', '.png', '.jpg', '.webp'].some((suffix) => value.includes(suffix))) {
-                                    $ele.attr('src', value);
-                                    break;
-                                }
-                            }
-                        }
-
-                        // absolute link
-                        if (baseUrl) {
-                            try {
-                                $ele.attr('src', new URL($ele.attr('src'), baseUrl).href);
-                            } catch (e) {
-                                // no-empty
-                            }
-                        }
-
-                        // referrerpolicy
-                        $ele.attr('referrerpolicy', 'no-referrer');
-
-                        // redundant attributes
-                        ['onclick', 'onerror', 'onload'].forEach((e) => {
-                            $ele.removeAttr(e);
-                        });
-                    });
-                    item.description = $('body').html();
-                }
-            });
-        }
+        // fix allowEmpty
+        ctx.state.data.item = ctx.state.data.item || [];
 
         // decode HTML entities
         ctx.state.data.title && (ctx.state.data.title = he.decode(ctx.state.data.title + ''));
         ctx.state.data.description && (ctx.state.data.description = he.decode(ctx.state.data.description + ''));
-        ctx.state.data.item &&
-            ctx.state.data.item.forEach((item) => {
-                item.title && (item.title = he.decode(item.title + ''));
-                item.description && (item.description = he.decode(item.description + ''));
-            });
 
-        // filter
-        if (ctx.query && (ctx.query.filter || ctx.query.filter_title || ctx.query.filter_description || ctx.query.filter_author)) {
-            ctx.state.data.item = ctx.state.data.item.filter((item) => {
-                const title = item.title || '';
-                const description = item.description || title;
-                const author = item.author || '';
-                return !(
-                    (ctx.query.filter && !title.match(ctx.query.filter) && !description.match(ctx.query.filter)) ||
-                    (ctx.query.filter_title && !title.match(ctx.query.filter_title)) ||
-                    (ctx.query.filter_description && !description.match(ctx.query.filter_description)) ||
-                    (ctx.query.filter_author && !author.match(ctx.query.filter_author))
-                );
-            });
-        }
-        if (ctx.query && (ctx.query.filterout || ctx.query.filterout_title || ctx.query.filterout_description || ctx.query.filterout_author)) {
-            ctx.state.data.item = ctx.state.data.item.filter((item) => {
-                const title = item.title;
-                const description = item.description || title;
-                const author = item.author || '';
-                return (
-                    (ctx.query.filterout && !title.match(ctx.query.filterout) && !description.match(ctx.query.filterout)) ||
-                    (ctx.query.filterout_title && !title.match(ctx.query.filterout_title)) ||
-                    (ctx.query.filterout_description && !description.match(ctx.query.filterout_description)) ||
-                    (ctx.query.filterout_author && !author.match(ctx.query.filterout_author))
-                );
-            });
-        }
-        if (ctx.query && ctx.query.filter_time) {
-            const now = Date.now();
-            ctx.state.data.item = ctx.state.data.item.filter(({ pubDate }) => {
-                if (!pubDate) {
-                    return true;
+        // handle description
+        ctx.state.data.item.forEach((item) => {
+            item.title && (item.title = he.decode(item.title + ''));
+
+            if (item.description) {
+                const $ = cheerio.load(item.description);
+                let baseUrl = item.link || ctx.state.data.link;
+
+                if (baseUrl && !baseUrl.match(/^https?:\/\//)) {
+                    if (baseUrl.match(/^\/\//)) {
+                        baseUrl = 'http:' + baseUrl;
+                    } else {
+                        baseUrl = 'http://' + baseUrl;
+                    }
                 }
 
-                try {
-                    return now - new Date(pubDate).getTime() <= parseInt(ctx.query.filter_time) * 1000;
-                } catch (err) {
-                    return true;
+                $('script').remove();
+
+                $('a').each((_, ele) => {
+                    const $ele = $(ele);
+
+                    // absolute link
+                    if (baseUrl) {
+                        try {
+                            $ele.attr('href', new URL($ele.attr('href'), baseUrl).href);
+                        } catch (e) {
+                            // no-empty
+                        }
+                    }
+                });
+
+                $('img').each((_, ele) => {
+                    const $ele = $(ele);
+
+                    // fix lazyload
+                    if (!$ele.attr('src')) {
+                        for (const key in ele.attribs) {
+                            const value = ele.attribs[key].trim();
+                            if (['.gif', '.png', '.jpg', '.webp'].some((suffix) => value.includes(suffix))) {
+                                $ele.attr('src', value);
+                                break;
+                            }
+                        }
+                    }
+
+                    // absolute link
+                    if (baseUrl) {
+                        try {
+                            $ele.attr('src', new URL($ele.attr('src'), baseUrl).href);
+                        } catch (e) {
+                            // no-empty
+                        }
+                    }
+
+                    // referrerpolicy
+                    $ele.attr('referrerpolicy', 'no-referrer');
+
+                    // redundant attributes
+                    ['onclick', 'onerror', 'onload'].forEach((e) => {
+                        $ele.removeAttr(e);
+                    });
+                });
+                item.description = he.decode($('body').html() + '');
+            }
+        });
+
+        if (ctx.query) {
+            // limit
+            if (ctx.query.limit) {
+                ctx.state.data.item = ctx.state.data.item.slice(0, parseInt(ctx.query.limit));
+            }
+
+            // filter
+            if (ctx.query.filter || ctx.query.filter_title || ctx.query.filter_description || ctx.query.filter_author) {
+                if (ctx.query.filter) {
+                    ctx.query.filter_title = ctx.query.filter;
+                    ctx.query.filter_description = ctx.query.filter;
                 }
-            });
-        }
+                ctx.state.data.item = ctx.state.data.item.filter((item) => {
+                    const title = item.title || '';
+                    const description = item.description || title;
+                    const author = item.author || '';
+                    let isFilter = true;
+                    ctx.query.filter_title && (isFilter = isFilter && !title.match(ctx.query.filter_title));
+                    ctx.query.filter_description && (isFilter = isFilter && !description.match(ctx.query.filter_description));
+                    ctx.query.filter_author && (isFilter = isFilter && !author.match(ctx.query.filter_author));
+                    return !isFilter;
+                });
+            }
 
-        // limit
-        if (ctx.query && ctx.query.limit) {
-            ctx.state.data.item = ctx.state.data.item.slice(0, parseInt(ctx.query.limit));
-        }
+            if (ctx.query.filterout || ctx.query.filterout_title || ctx.query.filterout_description || ctx.query.filterout_author) {
+                if (ctx.query.filterout) {
+                    ctx.query.filterout_title = ctx.query.filterout;
+                    ctx.query.filterout_description = ctx.query.filterout;
+                }
+                ctx.state.data.item = ctx.state.data.item.filter((item) => {
+                    const title = item.title;
+                    const description = item.description || title;
+                    const author = item.author || '';
+                    let isFilter = true;
+                    ctx.query.filterout_title && (isFilter = isFilter && !title.match(ctx.query.filterout_title));
+                    ctx.query.filterout_description && (isFilter = isFilter && !description.match(ctx.query.filterout_description));
+                    ctx.query.filterout_author && (isFilter = isFilter && !author.match(ctx.query.filterout_author));
+                    return isFilter;
+                });
+            }
 
-        // telegram instant view
-        if (ctx.query && ctx.query.tgiv) {
-            ctx.state.data.item.map((item) => {
-                const encodedlink = encodeURIComponent(item.link);
-                item.link = `https://t.me/iv?url=${encodedlink}&rhash=${ctx.query.tgiv}`;
-                return item;
-            });
+            if (ctx.query.filter_time) {
+                const now = Date.now();
+                ctx.state.data.item = ctx.state.data.item.filter(({ pubDate }) => {
+                    let isFilter = true;
+                    try {
+                        isFilter = !pubDate || now - new Date(pubDate).getTime() <= parseInt(ctx.query.filter_time) * 1000;
+                    } catch (err) {
+                        // no-empty
+                    }
+                    return isFilter;
+                });
+            }
+
+            // telegram instant view
+            if (ctx.query.tgiv) {
+                ctx.state.data.item.map((item) => {
+                    const encodedlink = encodeURIComponent(item.link);
+                    item.link = `https://t.me/iv?url=${encodedlink}&rhash=${ctx.query.tgiv}`;
+                    return item;
+                });
+            }
+
+            // fulltest
+            if (ctx.query.mode && ctx.query.mode.toLowerCase() === 'fulltext') {
+                const tasks = ctx.state.data.item.map(async (item) => {
+                    const { link, author, description } = item;
+                    const parsed_result = await ctx.cache.tryGet(`mercury-cache-${link}`, async () => {
+                        // if parser failed, return default description and not report error
+                        try {
+                            const res = await got(link);
+                            const $ = cheerio.load(res.data);
+                            const result = await mercury_parser.parse(link, {
+                                html: $.html(),
+                            });
+                            return result;
+                        } catch (e) {
+                            // no-empty
+                        }
+                    });
+
+                    item.author = author || (parsed_result ? parsed_result.author : '');
+                    item.description = parsed_result ? parsed_result.content : description;
+                });
+                await Promise.all(tasks);
+            }
         }
     }
 };
diff --git a/test/utils/got.js b/test/utils/got.js
index 3b414d1773..f93232995c 100644
--- a/test/utils/got.js
+++ b/test/utils/got.js
@@ -71,6 +71,7 @@ describe('got', () => {
             params: {
                 test: 1,
             },
+            responseType: 'buffer',
         });
     });
 });