The invention discloses an application method for performing authentication by using dual certificates, which comprises the steps of 1) performing configuration on an application system, specifying a work certificate which can used by the application system, specifying an authentication certificate-work certificate pair capable of passing bidirectional authentication, and specifying a condition of starting the work certificate at the same time; 2) enabling the authentication certificate; 3) performing bidirectional authentication between the authentication certificate and the work certificate; and 4) starting the work certificate, and realizing operations for each function of the application system. The beneficial effects lie in that the work certificate can be enabled safely and conveniently in the application system, a high-safety emergency plan is provided, and an actual demand that certain functions of the system can only be enabled by cooperation of multiple users in a service system can also be well solved at the same time.