the disclosure provides a method for realizing a mobile switch center pool , a system for realizing an msc pool and a media gateway . the method for realizing an msc pool includes : connecting with a base station controllers / radio network controller , by a media gateway through the use of a common signaling point ; and upon receipt of a message whose destination signaling point is the common signaling point from the bsc / rnc , determining , by the mgw , a destination msc server of the message according to id information carried in the message , and sending the received message to the destination msc server . according to the present invention , the networking scheme for an msc pool may be implemented without upgrading any bsc / rnc . the flexibility of the networking scheme for mobile communication systems may be improved , and the traffic load of the subscribers may be shared .