Chronic enterocolitis may also be cancerous, mainly due to repeated inflammatory irritation of the intestine, resulting in the formation of mucosal ulcers in the intestinal canal, and eventually local ulcers may become cancerous, and the patient may experience increased abdominal pain, accompanied by blood in the stool and significant anemia. With the development of tumor, patients may also develop intestinal obstruction, and malignant tumors are also prone to invasion of adjacent organs or secondary intestinal obstruction and peritoneal metastasis in the abdominal cavity, resulting in ascites. Therefore, patients with chronic enteritis should be treated systematically and colonoscopy should be performed. If obvious ulcers and atypical hyperplasia are found, surgery should be promptly chosen to remove the diseased intestinal segment, and some patients will need chemotherapy after surgery.