Connection establishment method and device

The embodiment of the application provides a connection establishment method and device applied to an AP. The method comprises the following steps: receiving an access request message sent by a firstterminal, wherein the access request message comprises a target address and the target basic service set identifier of the first terminal; if the connection between the AP and the AP is interrupted, sending the target address and the target basic service set identifier to the server, wherein access information, sent by the AC, of each terminal connected with the AC is stored in the server, and theaccess information comprises the address and the basic service set identifier of the terminal; if receiving the target access information including the target address and the target basic service setidentifier and sent by the server, establishing the connection with the first terminal according to the target access information. By applying the method provided by the embodiment of the application, the AP can continuously p