The invention discloses a high-performance high-temperature-resistant fluorosilicon powder paint and a preparation method thereof. The paint is composed of the following raw materials: an FEVE fluorocarbon resin, a silicon resin, nano titanium dioxide, a curing agent, a leveling agent, a degasifier, a catalyst, a defoamer, a pigment and a filler. The preparation method comprises the following steps: crushing the raw materials, premixing, carrying out melt extrusion, carrying out fine pulverization, and finally, screening to form the finished product. By adding the organic silicon resin, the application temperature is enhanced to -60 DEG C to +350 DEG C, and the curing temperature is lowered from 230 DEG C to 200 DEG C. The organic silicon resin has the advantages of favorable film forming property and the like. The fluorosilicon powder paint belongs to a novel green environment-friendly paint, and does not use any solvent in the production process. The fluorosilicon powder paint can be cured to form a film at 200 DEG C, has the advantages of high gloss and the like, and is suitable for protecting multiple metal substrates and high-temperature environment facilities.