Abstract: The present application relates to a self-resetting intelligent rotating lock cylinder device with power supply from a key, its matched lockset and the key. The self-resetting intelligent rotating lock cylinder device and the matched lockset include a keyhole unit and a turntable. An electronic circuit unit, an electromechanical drive unit and a force transmission clutch unit are provided on the turntable. A reset push pole that can reset the force transmission clutch unit is provided inside the keyhole. The electronic key includes a key head, contact points and an electronic circuit device. The electronic circuit device includes a power supply. Part of the out surface of the key head is wrapped with a metal sleeve. All contact points are exposed to the outer surface of the metal sleeve. By use of the intelligent rotating lock cylinder, its matched lockset and the key, existing mechanical locks can quickly upgraded to an electronic lock, and the safety and convenience of locksets in use are greatly improved.