diff --git a/src/module/api.py b/src/module/api.py
index 864d7972..b0664dd5 100644
--- a/src/module/api.py
+++ b/src/module/api.py
@@ -58,9 +58,9 @@ def remove_rule(bangumi_id: str):
 
 @router.post("/api/v1/collection", tags=["download"])
 async def collection(link: RssLink):
-    response = api_func.download_collection(link.rss_link).dict()
+    response = api_func.download_collection(link.rss_link)
     if response:
-        return response
+        return response.dict()
     else:
         return {"status": "Failed to parse link"}
 
diff --git a/src/module/core/download_client.py b/src/module/core/download_client.py
index 7f89bdf7..eb4c376a 100644
--- a/src/module/core/download_client.py
+++ b/src/module/core/download_client.py
@@ -67,9 +67,9 @@ class DownloadClient:
         self.client.rss_set_rule(rule_name=f"{rule_name} S{season}", rule_def=rule)
         logger.info(f"Add {official_name} Season {season}")
 
-    def rss_feed(self, rss_link):
+    def rss_feed(self, rss_link, item_path="Mikan_RSS"):
         # TODO: 定时刷新 RSS
-        if self.client.get_rss_info() == rss_link:
+        if self.client.get_rss_info(rss_link):
             logger.info("RSS Already exists.")
         else:
             logger.info("No feed exists, start adding feed.")
diff --git a/src/module/downloader/qb_downloader.py b/src/module/downloader/qb_downloader.py
index dc52ec18..d25ee2e6 100644
--- a/src/module/downloader/qb_downloader.py
+++ b/src/module/downloader/qb_downloader.py
@@ -66,17 +66,18 @@ class QbDownloader:
     def torrents_rename_file(self, torrent_hash, old_path, new_path):
         self._client.torrents_rename_file(torrent_hash=torrent_hash, old_path=old_path, new_path=new_path)
 
-    def get_rss_info(self):
-        item = self._client.rss_items().get("Mikan_RSS")
-        if item is not None:
-            return item.url
-        else:
-            return None
+    def get_rss_info(self, url) -> str | None:
+        items = self._client.rss_items()
+        for item in items.items():
+            if item[1].url == url:
+                return item[0]
+        return None
 
     def rss_add_feed(self, url, item_path):
         try:
-            if self.get_rss_info() is not None:
-                self.rss_remove_item(item_path)
+            path = self.get_rss_info(url)
+            if path:
+                self.rss_remove_item(path)
             self._client.rss_add_feed(url, item_path)
         except Conflict409Error:
             logger.exception("RSS Exist.")
diff --git a/src/module/manager/renamer.py b/src/module/manager/renamer.py
index fa50c63b..7bd97172 100644
--- a/src/module/manager/renamer.py
+++ b/src/module/manager/renamer.py
@@ -39,7 +39,7 @@ class Renamer:
         for f in info.files:
             file_name = f.name
             suffix = os.path.splitext(file_name)[-1]
-            if suffix in suffix_list:
+            if suffix.lower() in suffix_list:
                 file_list.append(file_name)
         return file_list