High-frequency plasma gas-phase combustion method for the preparation of nano-tin-antimony oxide powder ATO nano-superfine powders, high purity products, low bulk density (forty per cent lower than similar products in China), easily dispersed into a stable nano-slurry, greatly reducing the dispersion of nano ATO powder dispersal difficulties, improve the dispersion efficiency, greatly improve the visible light transmittance of the nano-slurry, the film's surface homogeneity. Nano antimony tin oxide powder, nano-supermicron powder with non-resistive transparent conductivity in the semiconductor field, can be applied to glass, various plastics, etc. to play an anti-static and transparent conductivity required in the field of application. Conductivity: uniformly dispersed conductive nanoscale particles of conductive interactions to form a conductive film, conductive film in the charge movement can achieve high transmittance and anti-static (106-1012Ω) Transparency: ATO nanoscale particles of ultrafine particles of visible light (400 nm-800 nm) absorption rate is extremely weak, and the visible light is difficult to scatter the size of the particles composed of, so there is transparency. Durability: chemically stable tin antimony oxide nanoparticles are composed of metal oxide powder, which can maintain the conductive property due to small changes in physical properties caused by heat, humidity and other external environments.