The utility model discloses a strong compound circle shear of superelevation, including the circle disk substrate body, the positive axle center department of the circle disk substrate body has setedup the mounting hole, the half slot has been seted up on the inner wall of mounting hole, the surface of the circle disk substrate body is seted up flutedly, the inside swing joint of recess has the carbide ring, round hole and first logical groove have been seted up respectively to the front of the circle disk substrate body, and round hole and first logical groove be linked together, the insideswing joint in first logical groove has the round bar, threaded hole is all seted up at the front and the back of round bar, the internal thread of screw hole is connected with the bolt, the draw -ingroove has been seted up to the internal surface of carbide ring, the cavity has been offered to the inside of the circle disk substrate body, it leads to the groove to have seted up the second on theinner wall of cavity. The utility model discloses a set up round bar movable block and connecting rod, when having solved the circle shear cutting edge emergence damage of present use, the whole circle shear that just needs to be changed, comparatively extravagant problem.