The invention discloses a rehabilitation training device applied to senility resistance of legs and feet of old people and a using method, and belongs to the technical field of rehabilitation training devices. The rehabilitation training device comprises a bottom plate, a rotating device, a moving device, a seat and a strip-shaped through hole, the top of the bottom plate is fixedly connected with the rotating device, and the inner wall of the bottom of the bottom plate is fixedly connected with the moving device; and a seat is fixedly connected to the top of the bottom plate and located on the left side of the rotating device. According to the rehabilitation training device applied to leg and foot aging resistance of the old and the using method, through arrangement of the rotating device, left and right opening and closing of the legs are facilitated, the inner sides of the legs are exercised, the feet are placed on first pedals on the left side and the right side respectively, at the moment, the thighs are slowly moved left and right, and when a rotating motor is started, a movable gear rotates and drives a bevel gear to rotate; the rotating rod and the first pedal rotate subsequently, exercise can be controlled by a user, the controller can also be started for electric control, the automation degree is high, and the leg rehabilitation exercise effect is improved.