Bowel cancer generally refers to colorectal cancer, which is a common malignant tumor in the gastrointestinal tract formed by abnormal gene regulation of normal colorectal tissues under the stimulation of carcinogens and abnormal proliferation of normal tissues. Early colon cancer confined to the mucosal layer can be resected by fiberoptic colonoscopy. If the tumor of the resected specimen is poorly differentiated or the margin of resection is suspected to be insufficient, the section of the intestinal canal and surrounding lymph nodes where the tumor is located can be surgically removed again. Due to the early stage and limited infiltration, postoperative radiotherapy is usually not required and regular observation and follow-up is sufficient. Surgical treatment is the only effective way. The resected specimen will be sent to pathology for examination, and the decision of whether to carry out postoperative radiotherapy and immunotherapy will be made according to the depth of cancer invasion, the amount of lymph node metastasis and the cutting edge after the pathology return. The treatment principle of early stage intestinal cancer is endoscopic resection or surgical radical resection. With regular follow-up after surgery, the prognosis is better and the 5-year survival rate is higher.