Embodiments of the present invention provide a method, a device and a system for accessing a wireless local area network, a wireless station, and a wireless access point. In the present invention, a wireless station bridge sets a virtual interface MAC address for an Ethernet device, so that the Ethernet device connected to the wireless station bridge has a corresponding MAC address in a wireless local area network, and therefore, the Ethernet device can access the wireless local area network by using a bridging function of the wireless station bridge.