An access system, including a reception device, a recognition server, and an access control device. The reception device acquires a plurality of images of an access object. The recognition server includes a liveness detection apparatus determines corresponding eigenvectors according to the plurality of images of the access object, captures an action behavior of the access object according to a relative change between the determined eigenvectors, and determines the access object as a live body in response to capturing the action behavior of the access object. The recognition server performs identity recognition on the access object when the access object is the live body so that the access control device configures an access permission for the access object that completes the identity recognition successfully, and the access object controls, according to the configured access permission, an access barrier of a specified work region to perform a release action.