The invention provides a preparation method of a composite fruity tobacco essence. The preparation method comprises the following steps: respectively crushing 20-30g of apple skins, 100-120g of grape skins, 80-110g of watermelon peel, 12-20g of orange peel, 50-70g of banana skins, 5-10g of mango skins and 20-40g of shaddock peel to form residues, mixing above residues, adding compound enzyme and 800-1000g of water, adjusting the pH value of the above obtained liquid to 5.0-5.3, carrying out enzymatic hydrolysis at 45-50DEG C for 40-60min, heating the obtained liquid to 100DEG C in order to inactivate enzyme, adding 1.2-1.8g of sodium benzoate, 0.2-0.6g of titanium dioxide, 8.5-11.2g of riboflavin, 1-3g of adipic acid, 15-23g of sodium sulfate and 20-25ml of n-butaonl, continuously decocting the obtained liquid at 100DEG C for 1.5-2h, filtering the decocted liquid, and concentrating the obtained filtrate. The essence prepared in the invention has the advantages of high aroma intensity, abundant fruit aromas, and satisfactory improvement of the quality of tobacco.