The invention provides a method for preparing fermentation malt extract for cigarettes, belongs to the technical field of tobaccos, and relates a method for preparing perfume. The method comprises the following steps of: 1) preparing malt extract by preprocessing malt, and preparing a culture medium; 2) sterilizing the culture medium; 3) inoculating, namely inoculating saccharomyces cerevisiae into the culture medium; 4) fermenting; and 5) separating to obtain the fermentation malt extract for the cigarettes. In the method, the fermentation malt extract for the cigarettes is produced by utilizing the saccharomyces cerevisiae, so the fermentation malt extract has the faint scent of the malt and pleasant sweet and mellow fragrance; and by adding the fermentation malt extract into the cigarettes, the faint scent and soft smoke can be increased, and the irritation of the cigarettes is reduced. In the method, by using the microbial fermentation technology, a new path of producing natural perfume for the cigarettes economically, efficiently and directionally is opened up, the novel perfume for the cigarettes which cannot be produced by the conventional production method for the perfume is developed, and a new variety of the perfume for the cigarettes is developed.