An access network method using WPS includes: receiving, by a mobile Wi-Fi device, a connection request sent by a user equipment (UE); determining, according to the connection request, that the UE enables a connection mode of a WPS function, where the connection mode includes an access point mode and a station mode; enabling, according to the connection mode, a WPS interface, of the mobile Wi-Fi device, that is corresponding to the connection mode; and establishing a WPS network connection to the UE by using the WPS interface.