Acute gastroenteritis is an acute inflammation of the gastrointestinal mucosa. The main clinical manifestations are nausea, vomiting, abdominal pain, diarrhea, fever and so on. This disease is common in summer and autumn, its occurrence is due to improper diet, eating or overeating; cold, dirty dirty rotten rotten food. According to the TCM etiology and physical differences, will be divided into cold and damp heat, gastroenteritis, indigestion and other types of. Acute gastroenteritis has three obvious symptoms: one, nausea, vomiting, abdominal pain, and diarrhea. Often the first abrupt onset of vomiting, nausea, vomiting of afterwards. A serious person can vomit bile or blood. Abdominal pain is more common in the middle and upper abdomen, and severe colic can be found in severe cases. Diarrhea is watery, several times a day to dozens of times, accompanied by the stench, deep yellow or greenish, with little blood, no tenesmus.