The hanging door is composed of left and right rails, door leaf, driving system, sealing system, anti-fall protection device, mechanical over load protection device, electrical over load protection device, infrared safety device and control system. The door leaf structure is composed of an aluminum alloy skeleton, supplemented by a matching external decorative decoration, and has the characteristics of beautiful appearance,thermal insulation, flexible opening, long service life, and good safety performance. When opened, the drive system lifts the door leaf to the top ofthe opening through a chain and arranges them in order. When the door is closed, the drive system lowers the door leaf to the specified position in sequence through the chain. Hanging doors are widely used in the gates of aircraft tail gates, workshops, warehouses, logistics, exhibition centers, etc.,and can also be used in places that require high aesthetics, such as shopping malls, high-end residential and entertainment venues, and can be installed indoors and outdoors.