A fully-automatic concentrating solar cooker is formed by a base, a reflector, a heating container frame, a universal bearing, a slide chute drive mechanism, a nut and screw drive mechanism, a gearbox, a motor drive circuit, a circulating time switch, a storage battery and a solar panel. The reflector, the heating container frame and the universal bearing are connected with the base, the slide chute drive mechanism and the nut and screw drive mechanism form an entire drive adjustment part, the motor drive circuit and the gearbox form a drive part, and the circulating time switch, the storage battery and the solar panel form a control part.