Fire coal energy saving and environmental protection biological additive and preparation method thereof

The invention relates to a fire coal energy saving and environmental protection biological additive and a preparation method thereof. The fire coal energy saving and environmental protection biological additive comprises, by weight, 5-20 parts of a fire coal activation bacterium liquid, 50-100 parts of an acetic acid compound, 50-100 parts of an ammonium salt, 10-20 parts of an alcohol compound and 700-900 parts of deionized water, wherein the acetic acid compound is selected from one or a mixture containing two or more of sodium acetate, potassium acetate and ammonium acetate; the ammonium salt is selected from one or a mixture containing two or more of ammonium sulfate, ammonium chloride, ammonium carbonate, ammonium bicarbonate and ammonium nitrate; and the alcohol compound is selected from one or a mixture containing two or more of glycerol, ethylene glycol and propylene glycol. The fire coal energy saving and environmental protection biological additive has the advantages of energy saving, emission reduction, reduction of coking in a boiler, improvement of the use efficiency of the boiler, and prolongation of the service life of the boiler.