The invention relates to a producing method of a teflon 
spatial structure membrane comprising following steps: fiberglass cloth low temperature genapping treatment, fiberglass cloth bottom layer dipping treatment, structure layer dipping treatment, 
surface layer dipping treatment and 
sintering treatment. Low temperature high speed genapping, multitime 
coating low-
temperature treatment, and once 
hyperthermia flash 
sintering effectively reduce tensile strength descending caused by high-
sintering treatment. Since fiberglass cloth is used as backing material, dipping treatment is not needed to be performed on the fiberglass 
yarn, the procedure is simplified to facilitate the production thereof, and shortcomings in prior art are overcome which are modified fiberglass 
yarn weaving difficulty and intensity and 
plasticity descending caused by multitime sintering. The teflon 
spatial structure membrane produced by using the invented method has a bottom layer, a structure layer and a 
surface layer, is provided with high pulling-against intensity, high tearing-against intensity, anti-
aging property, good flexibility, good light-admitting quality and a long service life, and can be used widely in air stations, gymnasiums, exhibition halls, large-scale factory buildings and factory building warehouses.