Grouting and hole-sweeping drill bit

The utility model relates to a grouting and hole-sweeping drill bit which is characterized in that the lower part of the grouting and hole-sweeping drill bit is cone-shaped, and gradually becomes small along the bottom end; the grouting and hole-sweeping drill bit comprises a hollow drill bit body and a plurality of blades; a plurality of gauge teeth are uniformly arranged on the outer side of the lower end of the drill bit body in the circumferential direction; the blades are uniformly arranged at the lower end of the drill bit body in the circumferential direction; hole-sweeping cutting teeth for cutting concrete cement on the wall of a cutting hole are arranged on each blade; the bottom ends of the blades are aggregated together, and hole bottom cutting teeth for cutting hole bottom concrete cement are arranged at the aggregated part. The grouting and hole-sweeping drill bit is high in hole-sweeping efficiency, can prevent bit burnout and drill burying accidents effectively, and is easy to process, and low in cost.