The invention discloses a stretching punching mechanism for a car gear clutch hub. The stretching punching mechanism comprises a rack. A female die installing block is fixed to the top face of the middle portion of a top plate of the rack. An installing cavity is formed in the middle portion of the top face of the female die installing block. A female die is inserted in the installing cavity in a sleeved manner and fixedly connected to the female die installing block through a bolt. An upper limiting ring body presses the top face of the female die installing block and the top face of the female die and is fixedly connected to the top faces of the female die installing block and the female die through a plurality of bolts. Side supporting plates are arranged on the two sides of the lower portion of a supporting frame. Side connecting plates are fixed to the upper portions and the lower portions of the outer side walls of the side supporting plates. The two ends of each vertical screw are hinged to the corresponding two side connecting plates. One of every two side connecting plates is fixedly provided with a drive motor, wherein an output shaft of the drive motor is a spline shaft, and the spline shaft is inserted in a spline hole in one end of the corresponding vertical screw in a sleeved manner. According to the stretching punching mechanism, stretching and punching are conducted on the same station, multi-time mounting and dismounting are not needed, the work efficiency is greatly improved, and the effect is good.