JSTY3750DKT passenger stairway (hand propelled) is a simple and environmentally friendly vehicle. The passenger ladder can be adjusted stepless according to the height of the aircraft door, so that the pedal and the platform height are always in a horizontal position. The passenger ladder is equipped with four legs, and the vehicle has a hand brake brake device, which enhances the stability and safety of the passenger ladder when it is parked and used under large wind, including the door assembly, the protection board assembly, the ladder body assembly, the lifting mechanism, the bottom frame assembly, the platform assembly, the tail ladder, and the solar panel assembly. The ladder structure is vertical plate change, boarding ladder up and down, the upper and lower ladder for parallel four-sided movement, the platform height changes from 2200 to 3750mm, external size: 7140 x 22030 x 3340mm, limited load: 8 people on the platform, 2 people on each step, maintenance mass: 1900kg