The movable smoke-proof hanging wall of fixed or movable smoke-proof facilities made of incombustible materials and hanging from the ceiling of not less than 500 mm refers to the smoke-proof hanging wall that automatically hangs down due to temperature, smoke or other control equipment in a fire. It is mainly used in high-rise or super-high-rise shopping malls, office buildings, warehouses and other occasions, which can effectively block the lateral flow of smoke under the ceiling of buildings, so as to improve the smoke exhaust effect in smoke-proof partitions.