This tow bar is a new design based on the characteristics of A320 and B737 aircraft, which can achieve the purpose of one-bar dual-purpose, that is, to achieve the towing of the A320 aircraft and meet the towing of the B737 aircraft. The hook part adopts the design of the aircraft blocking lever, which solves the shortcomings that the safety pin of the tow bar is easily damaged and falls off in the past. It is easy to use, safe and reliable.