Milk is generally not recommended during diarrhea. Diarrhea is usually due to improper diet, acute gastroenteritis, inflammatory bowel disease and other factors, the normal function of the patient’s intestinal tract during diarrhea will be affected to a certain extent, the ability to digest and absorb becomes poor. Milk is rich in protein, fat and other relatively difficult to digest food, drinking during diarrhea, will increase the burden on the gastrointestinal tract, gastrointestinal mucosal stimulation, not conducive to recovery, and even aggravate diarrhea. In addition, milk also contains a large amount of lactose, lactase is needed for digestion, and some people lack lactase in the digestive tract, (i.e., lactose intolerance), then if you drink milk, milk in the failure to be digested lactose will produce stimulation of the gastrointestinal tract, resulting in diarrhea aggravation. Therefore, diarrhea patients are generally not recommended to drink milk. Patients with diarrhea are advised to seek timely medical attention to identify the cause of the disease and carry out targeted treatment to avoid delays.