Automobile finish paint and preparation method thereof

The invention belongs to the technical field of automobile coatings, and particularly relates to an automobile finish coating and a preparation method thereof. The automobile finish paint is prepared from the following components in parts by weight: 24 to 50 parts of acrylic resin, 3 to 5 parts of chitosan, 8 to 16 parts of fluorocarbon resin, 2 to 5 parts of hydrophobic modified nano silicon dioxide and 4 to 9 parts of nano silicon carbide. The acrylic resin and the chitosan are compounded, the chitosan and the acrylic resin can be quickly cross-linked to form a net-shaped structure during curing and film forming, and a formed paint film has self-healing capacity after being scratched; meanwhile, the fluorocarbon resin and the hydrophobic modified nano silicon dioxide are compounded to achieve the optimal wear-resistant effect; the nano silicon carbide has excellent heat-conducting property, so that the finish paint film can be self-healed to repair scratches under the condition of natural light, and the com