The invention provides an access method, which comprise the following steps that (101) a user receives identity authentication; (102) after the identity authentication is passed, trust of the user is authenticated according to each trust in a user history accounting trust assemble; and if the trust authentication is passed, and step (103) is continuously executed, otherwise, the trust authentication is failed; and (103) according to each trust in the user history accounting trust assemble, corresponding authority of the user in target application is granted. The method has the advantages thatby adopting a trust service center and a network mutual trust platform in the invention, the user accessed into a wireless wire via identity authentication can acquire last accounting trust value in the network; and the trust value of the user will dynamically vary along different operations of the user so that wireless resources allocation and priority of the user are combined, therefore, authorization to user service with different security levels can be carried out according to the user trust.