diff --git a/NetworkAnalog/SimObjs.py b/NetworkAnalog/SimObjs.py
index 82e5c41..64227d6 100644
--- a/NetworkAnalog/SimObjs.py
+++ b/NetworkAnalog/SimObjs.py
@@ -731,7 +731,6 @@ class SimSwitch(SimBase):
 
 
 class SimHub(SimBase):
-    # todo: 集线器类
     """
     集线器类
     """
@@ -768,8 +767,3 @@ class SimHub(SimBase):
         """
         print(f"集线器-{self.ObjLabel}接受到数据，将进行转发！")
         self.transmit(packet)
-
-
-if __name__ == '__main__':
-    pass
-
diff --git a/NetworkAnalog/network.db b/NetworkAnalog/network.db
index 68a2411..a1239a1 100644
Binary files a/NetworkAnalog/network.db and b/NetworkAnalog/network.db differ