Access control method, device and system

The invention provides an access control method, an access control device and an access control system. According to the access control method, the access control device and the access control system,a mobile terminal regards current time as access control release time when sensing that the mobile terminal is subjected to execute access control release operation, and transmits the access controlrelease time, an access control authentication identifier and access control release operation parameters to access control equipment for verification, therefore, when the access control equipment receives the access control release time, the access control authentication identifier and the access control release operation parameters which are transmitted from the mobile terminal, the received access control release time, the access control authentication identifier and the access control release operation parameters are verified based on an access control authority corresponding to the mobileterminal, and thus the acc