Intestinal health has an important role in human health, including maintaining normal immune function and regulating nutritional metabolism in the intestines. 1. Maintaining normal immune function: there are beneficial bacteria, conditionally pathogenic bacteria and harmful bacteria in the intestinal tract, etc. When the intestinal flora is in a balanced state, it will maintain normal immunity. However, if the intestinal flora is out of balance, it will lead to excessive harmful bacteria, imbalance of immunity, and also easily cause various immune diseases. 2. Regulate nutritional metabolism in the intestinal tract: A healthy intestinal tract can break down the intestinal contents into micro-nutrients, which is favorable to the absorption of the human body. According to clinical evidence, but if the intestinal flora is out of balance, it may cause the occurrence of metabolic diseases such as obesity, diabetes, cardiovascular disease and so on. If intestinal abnormalities occur in the intestines, it is necessary to consult a doctor in a timely manner, improve the relevant examinations, and follow the doctor’s instructions for standardized treatment.