One of the benefits of oligosaccharides is that it can improve the micro-ecological environment in the human body, which is beneficial to the proliferation of bactericidal and other beneficial bacteria. The metabolic production of organic acids lowers the intestinal pH, inhibits the growth of intestinal salmonella and spoilage bacteria, regulates gastrointestinal function, and inhibits Intestinal spoilage substances, change stool characteristics, prevent constipation, and increase vitamin synthesis, improve human immune function.