The invention discloses an instrument panel heat-insulation anti-reflective film and a preparation method thereof, and raw material components are as follows: hollow alumina modified resin, an inorganic filler, ceramic powder, sodium carboxymethyl cellulose, glycerin, chitin, 20-30% acetic acid, sodium lauryl sulfate, and a silane coupling agent, the specific preparation method is as follows: adding the chitin to the acetic acid, shaking, taking supernatant, shaking the supernatant and the inorganic filler, the ceramic powder and the silane coupling agent to obtain mixed slurry, taking the hollow alumina modified resin, the sodium lauryl sulfate, the glycerin and the sodium carboxymethyl cellulose for mixing, heating, cooling and casting into a film to obtain a semi-finished film, finallyfilling mixed slurry into a spray gun, and spraying the mixed slurry onto the semi-finished film to obtain the instrument panel heat-insulation anti-reflective film. The instrument panel heat-insulation anti-reflective film prepared by the invention can effectively play a heat insulation and anti-reflection role, can improve the brightness of a windshield, and can also absorb harmful gases in theair to purify the air.