Abstract: By taking potatoes as raw materials and adding appropriate amount of rice,this test studied a brew process of a kind of nutrient-rich food vinegar by the method of raw-material fermentation.By the study of the Acetic Acid Fermentation technologies,we determine the technical parameters suitable for the fermentation process as follows： chaff： bran： 6：4;The alcohol degree：7%（v/v）;The quantity of inoculums：5%;The temperature of fermentation：32℃.