The invention provides high solid content environment-friendly anti-corrosion wax and a preparation method thereof. The anti-corrosion wax comprises the following components in percentage by weight: 20-30% of an antirust agent, 5-10% of a thickening filler, 1-5% of a film-forming agent, 30-40% of stock wax, 10-43% of resins, 0.5-2% of a drier and 0.5-3% of an anti-ultraviolet aging agent. The product has the characteristics that the anti-corrosion wax is high in non-volatile content, zero in VOC (Volatile Organic Compound) emission and excellent in film-forming property and permeability and has anticorrosion time reaching 10-15 years. The product is simple in production process, convenient to use, non-toxic and harmless, the VOC emission and unit vehicle consumption of the anti-corrosion wax in the automobile production process are reduced, the environment is protected, the economic benefits are greatly improved, and the anti-corrosion wax is applied to domestic main engine plants at present.