Small bowel disease can be large or small and should be analyzed on a case-by-case basis. Small bowel disease can be roughly divided into acute small bowel disease and chronic small bowel disease. 1. Acute small enteritis: acute small enteritis is mostly caused by infection, allergy, drugs, the onset of disease is more acute, most of the nausea and vomiting, abdominal pain and diarrhea symptoms, may be accompanied by fever, rehydration, anti-infective and other symptomatic treatment, the symptoms will be under control; if the acute small enteritis does not get timely treatment, it may lead to acute hemorrhagic necrotizing enterocolitis, which is a life-threatening condition. 2. Chronic small enteritis: the symptoms of chronic small enteritis are relatively hidden, usually found during physical examination or when serious complications occur. If complications such as intestinal obstruction and intestinal perforation are more serious, timely surgical treatment should be carried out. Chronic small bowel inflammation is recurrent and has a long duration, and the quality of life of patients is seriously affected. If the above symptoms occur, it is recommended to go to the hospital in time for early and regular treatment.