The invention discloses a method for accessing a terminal, comprising the following steps of: receiving an access request sent by the terminal; analyzing the access request to obtain the service type of the terminal; determining the number of the rest equivalent users according to the difference between the prior number threshold of accessing the equivalent users corresponding to the service type of the terminal and the number of the accessed terminal; determining whether the access request is responded according to the number of the rest equivalent users and a preset rest equivalent user threshold value. The invention further discloses a device for accessing the terminal. By adopting the invention, dynamic variation of a radio environment can be adapted, QOS with higher quality can be provided for the users, and the experience and the feeling of the users are improved.