Diabetic patients with frequent diarrhea have the following possibilities: i. Diabetic gastrointestinal phyllodesis, which occurs in diabetic patients with long-term poor glycemic control, manifesting as non-infectious diarrhea with no obvious cause, or symptoms of diarrhea alternating with constipation. Second, certain drugs, such as glycosidase inhibitors by inhibiting intestinal glycosidase activity, delaying the absorption of carbohydrates, resulting in prolonged retention of carbohydrates in the intestine, while the decomposition of carbohydrates by bacteria in the large intestine causes increased gas production, patients will experience symptoms of abdominal pain, diarrhea, abdominal distension, increased exhaustion; individual patients taking biguanide preparations can also experience symptoms of diarrhea. Third, combined with other diseases, such as diabetes combined with acute and chronic enteritis can appear the symptoms of diarrhea, diabetes combined with hyperthyroidism can also appear the symptoms of increased number of stools.