A bridge for heterogeneous QoS networks is provided. The bridge comprises an UPnP QoS processing unit, a bridge function unit and at least two of network drive drivers. The UPnP QoS processing unit collects connection information connected through the networks and QoS requirement information thereof through an UPnP QoS structure. The bridge function unit establishes and releases connection by allocating resources based on the collected connection information and QoS requirement information, and performs a bridging operation according to connection information of a received frame. At least two of network device drivers are physically connected to the networks.