Hard alloy head of cutting pick

The utility model discloses a hard alloy head of a cutting pick. The hard alloy head comprises a connecting seat and a conical head, a threaded groove is formed in the center of the upper surface of the connecting seat, a hoop groove is formed in the middle of the outer cambered surface of the connecting seat, and a cross-shaped slot is formed in the center of the bottom surface of the connecting seat; a threaded column is arranged on the bottom surface of the conical head and is in threaded connection with the threaded groove, and a notch is formed in the middle of the bottom surface of the threaded column; wherein arc-shaped cutting pick pieces are uniformly distributed on the outer arc surface of the conical head; wherein sawtooth grooves are formed in the outer side faces of the arc-shaped cutting tooth pieces, and the evenly-distributed sawtooth grooves are arranged in a spiral shape; a reinforcing bolt is in threaded connection with the interior of a penetrating screw hole formed in the middle of the ou