Gear shifting assisting system

The utility model discloses a gear-shifting assisting system, which relates to the field of carriers and is characterized by comprising a gear-shifting assembly, an air inlet is arranged on the gear-shifting assembly, a small valve body communicated with the air inlet is detachably connected onto the gear-shifting assembly, one end of the small valve body is in threaded connection with a valve body end cover, and a valve is arranged at the other end of the small valve body. A blanking cap and a valve body piston are arranged between the valve and the valve body end cover, the blanking cap abuts against the valve body piston, the valve body piston is connected into a cavity of the small valve body in a sliding mode, and a return spring is arranged between the valve body piston and the valve body end cover. According to the utility model, under the action of pressure difference, the valve body piston slides towards one side close to the valve body end cover, a gap is formed between the valve body piston and the