Smoke prevention system adopts natural ventilation mechanical pressurized air supply to prevent smoke entering the evacuation channel. Smoke exhaust system adopts natural ventilation method mechanical smoke exhaust method to exhaust smoke to the outside of the building.

The smoke control system is composed of air supply exhaust ducts, pipe wells, fire dampers, door switching equipment, supply exhaust fans other equipment. Smoke prevention system setup form stairwell positive pressure. Mechanical smoke exhaust system has a direct relationship with the smoke partition. Smoke control facilities of high-rise buildings should be divided into mechanical pressurized air supply smoke control facilities natural smoke exhaust facilities that can open the external windows.