Gastroenteritis is not caused by gastric disease, which usually causes patients to have vague abdominal pain or distension, such as pain in the upper abdomen or under the glabella, or with acid reflux, belching, burping, nausea, vomiting, etc. It usually does not cause patients to have diarrhea. However, if there is bleeding in the stomach, it can cause the patient to have black stools, which usually do not lead to an increase in the number of stools and do not lead to intestinal dysfunction or flora disorders. Enteritis is mainly caused by a disturbance of the internal flora of the intestine, which can be caused by a bacterial infection, a viral infection, or an allergy. It is usually manifested as a lot of stools, that is, thin stools, watery stools, yellow, possibly with blood, such as dark red or bright red, or pus and blood stools and so on may be, generally clear cause after the symptomatic treatment can be.