Colon cancer is a malignant tumor originating from the mucosal epithelium of the colon and is more common in life. The possibility of recurrence and metastasis after colon cancer surgery is often related to the specific situation of the patient. At this time, a simple analysis can be made according to the patient’s disease stage, if it is early stage, the recurrence rate is usually smaller, if it is middle stage, the recurrence rate is increased, and in advanced stage, it is more likely to recur. In addition, the recurrence and metastasis are also affected by other factors, so patients should not judge them only by the stage.1. Early stage: colon cancer is only limited to mucosal layer and submucosal layer, and the infiltration range is generally small, so it can be treated by mucosal resection under endoscopy. After treatment, early stage colon cancer patients usually have little possibility of recurrence and metastasis after surgery, and the 2-year recurrence rate is generally below 10%; 2.Middle stage: if the disease is delayed for a long time, it may lead to colon cancer invading into the muscular layer. Even after surgery, the recurrence and metastasis rate is elevated compared with the early stage. At this time, if active treatment is carried out according to medical advice, such as regular radiotherapy and chemotherapy, the recurrence rate is generally about 30% and metastasis may occur; 2. Advanced colon cancer: usually refers to colon cancer with infiltration of adjacent tissues or distant metastasis. Even if the cancer tissue has been completely removed through surgery, some cancer cells that are not visible to the naked eye may still be missed, and the cure rate may only be about 10%, which will increase the possibility of recurrence and metastasis of colon cancer after surgery. In addition, factors such as tumor size, distribution of lymph nodes and degree of lymphatic infiltration are also related to postoperative recurrence and metastasis of colon cancer. If the tumor is already large when it is found, the degree of invasion to the surrounding area is high, and there are more hidden lesions of cancer, it may also increase the recurrence and metastasis rate of colon cancer after surgery. Colonoscopy review is recommended after 3 months of treatment, followed by regular follow-up every six months to detect recurrence and metastasis in time in order to reduce the chance of adverse consequences.