According to the functional characteristics of the enzyme and probiotic preparations, Dayu carries out a reasonable combination of probiotics and enzymes to give full play to their synergistic effects. Improving the intestinal microbial community structure by promoting the growth of probiotics and inhibiting the growth of harmfulbacteria. Enhancing intestinal barrier function by repairing intestinal mucosa and regulating immune response. Promoting nutrient absorption by improving digestive efficiency and synthesizing vitamins and short-chain fatty acids. In addition, it can also regulate intestinal peristalsis and promote the excretion of feces.