Abstract:Buckwheat and passion fruit were used as the main raw materials and yeast was inoculated to ferment，and the buckwheat passion fruit composite fruit wine was developed.The optimal process parameters of fruit wine were determined by single factor and orthogonal experiments.The results showed that the optimum process parameters of buckwheat passion fruit composite wine was 8.0 ∶2.0，the pH 3.5，the temperature was 26 ℃，and the yeast inoculum was 0.45 g/L.Under these conditions，the fruit wine produced was golden in color，clear and transparent，rich in flavor，soft in taste，unique in style and typical in style.