The invention belongs to the technical field of fuel additives, and particularly relates to an additive for reducing the emission of alcohol-based fuel particles. The additive is prepared from the following raw materials by weight: 10-25 parts of a combustion-promoting agent, 5-15 parts of 2-ethylhexylphosphonic acid mono-2-ethyl hexyl ester, 3-11 parts of methyl silicone oil, 2-9 parts of trimethylolpropane diallyl ether, 2-8 parts of bromo-1-octyl-3-methylimidazole, 2-7 parts of dimethyl acetamide, 1-8 parts of polyoxyethyl glycerin ether, 1-7 parts of cyclohexyl amine, 1-5 parts of methyl methacrylate, and 1-6 parts of cresyl diphenyl phosphate. With the additive of the present invention, the combustion of the fuel is complete, the combustion efficiency is improved, the emission of harmful substances and particles is reduced, and the advantages of energy saving and environmental protection are provided.