The invention provides a normal-temperature curable fluorocarbon coating for corrosion prevention and a preparation method of the fluorocarbon coating. The fluorocarbon coating specifically comprises a component A and a component B, wherein the component A comprises, by weight, 30%-45% of FEVE fluorocarbon resin, 20%-30% of nano-titanium dioxide, 2%-10% of nano-cerium oxide, 15%-20% of a solvent as well as 4%-10% of a leveling agent, an antifoaming agent, a wetting dispersant, a thixotropic agent and filler by total mass; the component B comprises, in percentage by mass, 10%-50% of an siocyanate curing agent and the balance of a solvent. The weather resistance of fluorocarbon coatings is further improved under the compound effect of nano-titanium dioxide and nano-cerium oxide.