While-drilling plugging drill bit tool and using method

The invention discloses a while-drilling leaking stoppage drill bit tool and a using method, the while-drilling leaking stoppage drill bit tool comprises a drill bit body, a blade, PDC teeth and a nozzle, a drill bit extension part is arranged at the rear end of the drill bit body, at least one while-drilling leaking stoppage hole is formed in the drill bit extension part, and a rotating part is provided with a while-drilling leaking stoppage hole corresponding to the while-drilling leaking stoppage hole in the drill bit extension part. A pressing type rotating device composed of a starting spring, a rotating piece, a locking piece, a pressing piece and a safety spring is arranged in the drill bit extension piece, a limiting sleeve is arranged at the rear end of the drill bit extension piece to limit the stroke range of the movable plunger, and the pressing piece and the locking piece achieve relative movement through a guide rail. The pressing piece moves in the axial direction of the locking piece after bea