Adults with fever can drink milk, but if the fever is accompanied by diarrhea for various reasons, do not drink milk. Milk is a liquid food, rich in protein, calcium and other nutrients. When fever is accompanied by loss of appetite, nausea, vomiting and other symptoms, liquid food is more easily digested and absorbed. It should be noted that if the cause of fever is acute gastroenteritis, food poisoning, or gastrointestinal colds, gastrointestinal disorders, the patient has symptoms of diarrhea, you can not drink milk at this time. Milk is a macromolecular substance, and when there is inflammation in the gastrointestinal tract milk is not easily digested and absorbed, but will lead to increased diarrhea. The diet of patients with fever should pay attention to balanced nutrition and ensure sufficient intake of calories, proteins and carbohydrates in order to help improve the body’s resistance and promote the recovery of the disease.