The invention discloses a cigarette perfume solvent and a preparation method thereof. The preparation method of the cigarette perfume solvent comprises the steps of mixing water-solubility solvent and tobacco fragments or tobacco smalls, heating the mixture for inverse-flow extraction, filtering the extracted liquid, adding organic acid and sugar to the extracted liquid, adding zymogen strain at 35 DEG C, fermenting the reaction product for 5-15 days in a sealing mode under the temperature of 80-85 DEG C, filtering and removing deposition, stirring under normal atmosphere and heating to 80-85 DEG C for distilling, and obtaining the distilment which is the needed cigarette perfume solvent. Compared with edible alcohol and general grain brewing wine, the cigarette perfume solvent has obvious ferment smell characteristic, better mouthfeel and special ferment perfume, enables the perfume of cigarette to be cooperative, sweet-scented, mellow and exquisite, remarkably improves the aftertaste and has remarkable function for slowing down stimulation. The cigarette perfume solvent can dissolve multiple essences and flavors through adjusting the alcohol degree according to requirement, can be used as solvent for essences and flavors, and can be independently used for adding flavors, thereby having favorable application foreground.