The invention discloses a
smoke prevention and exhaust
support system for a gas film building and a using method. The
smoke prevention and exhaust
support system is arranged below a film surface; under the condition of fire, a fire inspection
system moves along a circular support ring rail to send a
fire behavior to a
control room; meanwhile, an emergency lighting device is turned on; when
flue gas is gathered below the film surface, a
smoke exhaust fan is started, and the high-temperature
flue gas is exhausted outdoors; when an internal air pressure drops suddenly, a double-speed air supplementing fan is started, and outdoor
fresh air is conveyed indoors; and when the film surface collapses to the inner surface to be in contact with a collapse support ring, a trapped person takes up an axe from storage grids to scratch the film surface, so that self-rescue escape is realized. Under a condition of wind disasters or
snow disasters, the film surface is torn by strong wind or crushed by heavy
snow, so that the
indoor air pressure of the air film building is suddenly reduced, the emergency lighting device is turned on, and the double-speed air supplementing fan is started, so that outdoor
fresh air is conveyed indoors; when the film surface collapses to be in contact with the collapse supporting ring and most of the periphery is scattered on the ground, the trapped person takes upthe axe from the storage grids to scratch the film surface, and self-rescue escape is achieved.