Method for preparing enzyme-catalyzed and microbial co-fermentation special medical food

The invention relates to a method for preparing enzyme-catalyzed and microbial co-fermentation special medical food. The method comprises the following steps: enzymatically digesting the raw materials, then fermenting the yeast separately, and then co-fermenting the yeast and the lactobacillus lactis subsp. to obtain the product. The method applies enzyme catalysis and microbial fermentation to the production of special medical food for the first time, and hydrolyzes proteins into small molecule amino acids and polypeptides by protease catalysis, which is easy for human body to digest and absorb; the decomposed nutrients are beneficial to the fermentation of the subsequent yeast and Lactococcus lactis subsp. lactis, the yeast fermentation consumes oxygen, which provides anaerobic environment for the growth of the Lactococcus lactis subsp., the Lactobacillus lactis subsp. lactis uses lactic acid and a yeast gain material as the substrates to produce a natural bioactive antibacterial peptide- nisin which has an