The invention relates to a silicon-carbide-nano-fiber-reinforced halogen-free flame-retardant insulation material for home appliances, which is prepared from the following raw materials in parts by weight: 1-1.5 parts of wollastonite powder, 1-2 parts of tritolyl phosphate, 2-3 parts of silicon carbide nano fiber, 2-3 parts of molybdenum trioxide, 1-1.5 parts of triethylenetetramine, 10-15 parts of low-density polyethylene resin, 0.3-0.4 part of vinyltrimethoxy silane, 0.04-0.08 part of dicumyl peroxide, 0.01-0.02 part of di-n-butyl tin laurate, 40-50 parts of magnesium hydroxide, 60-65 parts of EVA (ethylene-vinyl acetate) and 20-23 parts of high-density polyethylene resin. The tritolyl phosphate, silicon carbide nano fiber and triethylenetetramine are added to obviously improve the soaking electric properties of the insulation material and enhance the hardness, heat stability and chemical corrosion resistance. The insulation material has high critical breakdown electric field and high heat conductivity.