High-rise building emergency evacuation rescue control speed slow descent device and method

The invention discloses a high-rise building emergency evacuation rescue control speed slow descent device and method. The device comprises an automatic slow descent device fixed to a building and a rope reel matched with the automatic slow descent device through a winding safety rope; an auxiliary safety rope is fixedly arranged at the position, beside the automatic slow descent device, of the building, and a manual slow descent device is arranged on the winding safety rope and the auxiliary safety rope in a sliding manner. The method comprises the steps of firstly, high-rise building emergency evacuation preparation; secondly, manual slow descent device mounting; thirdly, rope reel starting; fourthly, control speed slow descent of escape personnel; fifthly, landing unbundling of the escape personnel; sixthly, resetting of the rope reel. The descent speed of the escape personnel can be automatically adjusted, manual deceleration brake is achieved, the device can be repeatedly used, operation is easy, safety