Examples relate to a method and a device for wireless access authentication. The method is applied to an intelligent gateway which is previously associated with account information of a user. The intelligent gateway may receive an access authentication packet comprising an authentication identification indicating a terminal device; the intelligent gateway may construct an identity verification packet comprising an authentication identification indicating the terminal device and an association account identification indicating an account registered on the intelligent gateway; the intelligent gateway may send the identity verification packet to a cloud server; the intelligent gateway may permit a terminal device corresponding to authentication identification carried in a verification success packet returned by the cloud server to pass the access authentication.