Enteroscopy to the end of the ileum small flaky erosion may be caused by terminal ileitis, if the patient’s symptoms are mild, usually not serious. If the patient is complicated by bowel perforation and other conditions, it is more serious. In addition, localized cancer is also serious. If patients with terminal ileitis do colonoscopy and find small pieces of erosion at the end of the ileum, and the patients are asymptomatic, or only have diarrhea, it usually means that the condition is not serious. If a patient with terminal ileitis is complicated by intestinal perforation, bleeding, secondary infection, multiple abscesses, and other conditions, the condition is more serious, and some patients may die in severe cases. If the patient undergoes colonoscopy and finds small pieces of erosion in the terminal ileum, and the pathological examination finds localized carcinoma, it is a serious situation. It is recommended that patients who have small pieces of erosion at the end of the ileum by colonoscopy should consult a doctor in time, and the doctor will judge whether the condition is serious according to the patient’s condition and take corresponding treatment measures.