The invention discloses a color-changeable PP (polypropylene) insulation release film comprising PP, PC, ceramic powder, epoxy resin 6101, furfuryl alcohol furfural resin, melamine, polyacrylamide, polyamide 66, nano-alumina, mica powder, talcum powder, polyvinyl butyral, tetraethyl orthosilicate, ABS, PFA, PBT, PET, polyethylene glycol monomethyl ether, FEP, polymethyl methacrylate, PPO, glass fibers, organic montmorillonite, polyether-ether-ketone fibers, thermochromic red, dodecanol, chitosan, an antioxidant 1010, a light stabilizer 622, nano-TiO2, a PP-g-MAH, a thickener and a coupling agent. The release film has excellent insulativity, heat dissipation, water resistance, corrosion resistance, temperature resistance, weather resistance and adhesiveness, can change colors with heat and has a high-temperature warning effect.