If elderly patients with diabetes often have diarrhea, they are often considered to have diabetic autonomic neuropathy, which is treated as follows: 1. It is necessary to control blood sugar, whether by means of oral hypoglycemic drugs or insulin, and blood sugar must be controlled in the ideal range. 2. Use drugs that nourish the nerves, and improve nerve function through drugs such as methylcobalamin, epalrestat or lipoic acid, in order to maximize the 3, use a certain amount of drugs to improve the intestinal flora, such as bifidobacteria and other drugs are recommended, can improve the disorder of the patient’s intestinal flora, to achieve the purpose of correcting the patient’s symptoms. 4, when necessary, use a certain amount of antibiotics, mainly quinolones, such as levofloxacin, the purpose is to release the patient through anti-infection, to have the possibility of The purpose of anti-infection is to relieve the patient from potential intestinal infection in order to achieve the purpose of treating diarrhea.