The invention relates to a heat-insulating protective film capable of preventing blue light and ultraviolet light and resisting fog. The heat-insulating protective film is formed by a fog resisting layer (1), a first polyester film (2-1), a blue light-preventing heat-insulating adhesive layer (3), a second polyester film (2-2), an ultraviolet blocking pressure-sensitive adhesive layer (4) and a release film (5), and all the layers are combined into a whole; the blue light-preventing heat-insulating adhesive layer (3) is a mixed material formed by a compound light stabilizer, a heat-insulating material, an adhesive, a curing agent and a solvent and is used for coating the other surface of the first polyester film (2-1), and the ultraviolet blocking pressure-sensitive adhesive layer (4) is a mixed material formed by an adhesive, a curing agent, an ultraviolet absorbent and a solvent and is used for coating the other surface of the second polyester film (2-2). The heat-insulating protective film capable of preventing blue light and ultraviolet light and resisting fog provided by the invention can effectively protect human eyes from being harmed by blue light through being attached to glass surfaces of buildings and automobiles, and meanwhile, has the functions of blocking the ultraviolet light, insulating heat, resisting fog, and the like.