diff --git a/backend/src/test/test_database.py b/backend/src/test/test_database.py
index 4cd48b13..83edf119 100644
--- a/backend/src/test/test_database.py
+++ b/backend/src/test/test_database.py
@@ -1,33 +1,24 @@
 import pytest
-from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
-from sqlalchemy.orm import sessionmaker
-from sqlmodel import SQLModel
+from sqlmodel import Session, SQLModel, create_engine
 
 from module.database.bangumi import BangumiDatabase
 from module.database.rss import RSSDatabase
 from module.database.torrent import TorrentDatabase
 from module.models import Bangumi, RSSItem, Torrent
 
-# sqlite async mock engine
-engine = create_async_engine(
-    "sqlite+aiosqlite://",
-    echo=False,
-)
-async_session_factory = sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
+# sqlite sync engine for testing
+engine = create_engine("sqlite://", echo=False)
 
 
 @pytest.fixture
-async def db_session():
-    async with engine.begin() as conn:
-        await conn.run_sync(SQLModel.metadata.create_all)
-    async with async_session_factory() as session:
+def db_session():
+    SQLModel.metadata.create_all(engine)
+    with Session(engine) as session:
         yield session
-    async with engine.begin() as conn:
-        await conn.run_sync(SQLModel.metadata.drop_all)
+    SQLModel.metadata.drop_all(engine)
 
 
-@pytest.mark.asyncio
-async def test_bangumi_database(db_session):
+def test_bangumi_database(db_session):
     test_data = Bangumi(
         official_title="无职转生，到了异世界就拿出真本事",
         year="2021",
@@ -51,34 +42,33 @@ async def test_bangumi_database(db_session):
     db = BangumiDatabase(db_session)
 
     # insert
-    await db.add(test_data)
-    result = await db.search_id(1)
+    db.add(test_data)
+    result = db.search_id(1)
     assert result.official_title == test_data.official_title
 
     # update
     test_data.official_title = "无职转生，到了异世界就拿出真本事II"
-    await db.update(test_data)
-    result = await db.search_id(1)
+    db.update(test_data)
+    result = db.search_id(1)
     assert result.official_title == test_data.official_title
 
     # search poster
-    poster = await db.match_poster("无职转生，到了异世界就拿出真本事II (2021)")
+    poster = db.match_poster("无职转生，到了异世界就拿出真本事II (2021)")
     assert poster == "/test/test.jpg"
 
     # match torrent
-    result = await db.match_torrent(
+    result = db.match_torrent(
         "[Lilith-Raws] 无职转生，到了异世界就拿出真本事 / Mushoku Tensei - 11 [Baha][WEB-DL][1080p][AVC AAC][CHT][MP4]"
     )
     assert result.official_title == "无职转生，到了异世界就拿出真本事II"
 
     # delete
-    await db.delete_one(1)
-    result = await db.search_id(1)
+    db.delete_one(1)
+    result = db.search_id(1)
     assert result is None
 
 
-@pytest.mark.asyncio
-async def test_torrent_database(db_session):
+def test_torrent_database(db_session):
     test_data = Torrent(
         name="[Sub Group]test S02 01 [720p].mkv",
         url="https://test.com/test.mkv",
@@ -86,22 +76,21 @@ async def test_torrent_database(db_session):
     db = TorrentDatabase(db_session)
 
     # insert
-    await db.add(test_data)
-    result = await db.search(1)
+    db.add(test_data)
+    result = db.search(1)
     assert result.name == test_data.name
 
     # update
     test_data.downloaded = True
-    await db.update(test_data)
-    result = await db.search(1)
+    db.update(test_data)
+    result = db.search(1)
     assert result.downloaded == True
 
 
-@pytest.mark.asyncio
-async def test_rss_database(db_session):
+def test_rss_database(db_session):
     rss_url = "https://test.com/test.xml"
     db = RSSDatabase(db_session)
 
-    await db.add(RSSItem(url=rss_url, name="Test RSS"))
-    result = await db.search_id(1)
+    db.add(RSSItem(url=rss_url, name="Test RSS"))
+    result = db.search_id(1)
     assert result.url == rss_url