The invention provides a preparation method of fermented parochetus communis perfumes for cigarettes. The preparation method comprises the following steps: collecting parochetus communis, adding water, sterilizing the parochetus communis at a high temperature, cooling, adjusting a pH value, adding cellulose and glucoamylase, performing the enzymatic hydrolysis in a constant-temperature table concentrator at the temperature of 40 to 60 DEG C, then adding glucose, ammonium sulfate, magnesium sulfate heptahydrate, sodium chloride and iron sulfate heptahydrate into an emzymatic hydrolysis solution, sterilizing at a high temperature, adding activated plant lactobacillus, rhizopus javanicus and candida kruse, fermenting, then adding water into a fermented product, heating, refluxing, extracting, filtering, collecting filtrate, decompressing and concentrating to obtain paste, thus obtaining the parochetus communis perfumes for the cigarettes. The perfumes for the cigarettes prepared by the method comprises various perfume compounds for tobaccos such as alcohols, aldehydes, ketone, acids, esters, phenols, and furans; and when the fermented perfumes are added into the cigarettes, offensive odor and irritation in the cigarettes can be reduced, the smoke gas is pure and mild, the fragrance of the cigarette is increased, and the remaining smell of the cigarette is relatively comfortable.