Authentication method and device for user equipment

The invention discloses an authentication method and device for user equipment. The authentication method for the user equipment comprises the steps of: acquiring an authentication vector in core network equipment, and storing the authentication vector; judging whether a target situation occurs; in the case of judging that the target situation occurs, carrying out authentication on the user equipment by a base station through utilizing the authentication vector; and in the case that an authentication result of the user equipment is that authentication is passed, providing a wireless communication service to the user equipment. By the authentication method and device disclosed by the invention, the problem of poor flexibility of authenticating the user equipment in a wireless communication system in the prior art is solved, so that an effect of improving flexibility of authenticating the user equipment is achieved.