Preparation method of banana fruit wine

The invention relates to a preparation method of a banana fruit wine, belonging to the technical field of food and beverage processing. The preparation method comprises four steps, namely banana juice blending, inoculation, aging and filtration, and specifically comprises the following steps: adding white granulated sugar into banana clear juice obtained by virtue of enzymatic hydrolysis and clarification to adjust the sugar content to be 10-15Brix, and adding citric acid to adjust the acidity pH value to be 4-5; pouring the blended banana juice into a triangular flask, and adding a grape wine yeast which accounts for 2-4% of the mass of the banana juice and a beer yeast which accounts for 3-8% of the mass of the banana juice to perform fermentation for 5-7 days at 20-25 DEG C; standing the fermented banana fruit wine for 10-14 days at room temperature; and performing filtration by adopting an ultra-filtration membrane to obtain the banana fruit wine. The banana fruit wine prepared by adopting the method disclosed by the invention is unique in flavor and full-bodied and delicious in aroma, is rich in various phenols, amino acids, organic acids and vitamins, has rich mineral nutrients such as potassium and magnesium, and has good effects on prevention and auxiliary treatment of diseases such as high blood pressure and cardiovascular diseases after long-term drinking.