The invention discloses a nano ATO (antimony tin oxide) modified mesoporous carbon conductive coating which comprises the following raw materials in percentage by weight: 8%-12% of nano ATO modified mesoporous carbon, 2%-4% of conductive sericite powder, 50%-55% of tert-fluorine emulsion, 10%-12% of N-methyl pyrrolidone, 2%-4% of nano CeO, 2%-3% of poly 1,6-heptadiyne, 1%-1.5% of gamma-aminopropyl triethoxy silane, 0.5%-1% of a leveling agent, 0.1%-0.3% of a defoamer, 1%-1.5% of a dispersant and the balance of water, wherein nano ATO modified mesoporous carbon is a material with nano ATO loaded inside and outside a mesoporous carbon pore channel, prepared by a chemical impregnation method. According to the conductive coating, good conductivity can be achieved by a relatively small amount of the conductive fillers, and nano materials in the conductive fillers cannot be agglomerated and settled; the coating is good in electromagnetic screening capability, weather-proof, resistant to ultraviolet irradiation and long in service life.