diff --git a/app/modules/qbittorrent/qbittorrent.py b/app/modules/qbittorrent/qbittorrent.py
index b0acaf14..54746ba5 100644
--- a/app/modules/qbittorrent/qbittorrent.py
+++ b/app/modules/qbittorrent/qbittorrent.py
@@ -20,10 +20,16 @@ class Qbittorrent(metaclass=Singleton):
 
     qbc: Client = None
 
-    def __init__(self):
-        self._host, self._port = StringUtils.get_domain_address(address=settings.QB_HOST, prefix=True)
-        self._username = settings.QB_USER
-        self._password = settings.QB_PASSWORD
+    def __init__(self, host: str = None, port: int = None, username: str = None, password: str = None):
+        """
+        若不设置参数，则创建配置文件设置的下载器
+        """
+        if host and port:
+            self._host, self._port = host, port
+        else:
+            self._host, self._port = StringUtils.get_domain_address(address=settings.QB_HOST, prefix=True)
+        self._username = username if username else settings.QB_USER
+        self._password = password if password else settings.QB_PASSWORD
         if self._host and self._port:
             self.qbc = self.__login_qbittorrent()
 
diff --git a/app/modules/transmission/transmission.py b/app/modules/transmission/transmission.py
index fa7b9bd8..4824df33 100644
--- a/app/modules/transmission/transmission.py
+++ b/app/modules/transmission/transmission.py
@@ -24,10 +24,16 @@ class Transmission(metaclass=Singleton):
               "peersGettingFromUs", "peersSendingToUs", "uploadRatio", "uploadedEver", "downloadedEver", "downloadDir",
               "error", "errorString", "doneDate", "queuePosition", "activityDate", "trackers"]
 
-    def __init__(self):
-        self._host, self._port = StringUtils.get_domain_address(address=settings.TR_HOST, prefix=False)
-        self._username = settings.TR_USER
-        self._password = settings.TR_PASSWORD
+    def __init__(self, host: str = None, port: int = None, username: str = None, password: str = None):
+        """
+        若不设置参数，则创建配置文件设置的下载器
+        """
+        if host and port:
+            self._host, self._port = host, port
+        else:
+            self._host, self._port = StringUtils.get_domain_address(address=settings.TR_HOST, prefix=False)
+        self._username = username if username else settings.TR_USER
+        self._password = password if password else settings.TR_PASSWORD
         if self._host and self._port:
             self.trc = self.__login_transmission()
 
diff --git a/app/utils/singleton.py b/app/utils/singleton.py
index a6bf423d..908b2ffd 100644
--- a/app/utils/singleton.py
+++ b/app/utils/singleton.py
@@ -9,9 +9,10 @@ class Singleton(abc.ABCMeta, type):
     _instances: dict = {}
 
     def __call__(cls, *args, **kwargs):
-        if cls not in cls._instances:
-            cls._instances[cls] = super(Singleton, cls).__call__(*args, **kwargs)
-        return cls._instances[cls]
+        key = (cls, args, frozenset(kwargs.items()))
+        if key not in cls._instances:
+            cls._instances[key] = super().__call__(*args, **kwargs)
+        return cls._instances[key]
 
 
 class AbstractSingleton(abc.ABC, metaclass=Singleton):