Pure milk is not recommended for patients with diarrhea. Pure milk is rich in milk protein, calcium, lactose and other nutrients, but lactose and milk protein are not easy to digest. Patients with enteritis are prone to aggravate the symptoms of diarrhea after drinking pure milk, therefore, it is not recommended that patients with diarrhea drink pure milk. Diarrhea patients manifested as unshaped stools, frequent stools, abdominal pain, abdominal distension and other such symptoms, patients try not to eat cold and greasy and not easy to digest food, such as fried food, fatty meat and so on. Diarrhea patients who unintentionally drink plain milk, symptoms worsen when you have to consult a doctor in time, do not blindly take medication on their own to avoid adverse consequences, need to be standardized treatment under the guidance of a physician’s visit.