The utility model relates to a strenghthened type single tube shock absorber, a strenghthened type single tube shock absorber, including frame hole, oil blanket, piston, coil spring, bearing bar, axlehole, bearing and working cylinder, frame hole bottom portion is equipped with the piston, and threaded connection is passed through in piston and frame hole, piston bottom both sides are equipped with the oil blanket, oil blanket bottom is equipped with the screw thread spring, and coil spring and oil blanket pass through threaded connection, screw thread spring bottom is equipped with the bearing bar, bearing bar bottom is equipped with the axle hole, and axle hole and bearing bar pass through threaded connection, the inside bearing that is equipped with of coil spring, the bearing bottom is equipped with the working cylinder, be equipped with the bearing gasket between oil blanket and the bearing, bearing gasket and oil blanket pass through bonding connection, and this strenghthened type single tube shock absorber is used for the vehicle shock attenuation, mainly are that the single tube shock absorber shock attenuation effect that has now is effective, unable long -term the use, and this novel simple structure easily realizes.