After colon cancer surgery, it is generally recommended to review every three months in the first two years after surgery, and then choose the review time according to the patient’s condition; the review items include blood test, imaging test, colonoscopy, etc., and the specific items are related to the patient’s condition. Postoperative colon cancer should be rechecked regularly, generally it is recommended to recheck every 3 months in the first two years, and then choose to recheck half a year or once a year according to the patient’s condition after two years. Routine checkups include tumor marker tests, blood tests such as routine blood tests and biochemical tests, imaging tests such as chest and abdominal CT and ultrasound, and colonoscopy, etc., to further observe whether the tumor has recurred or metastasized. Specific review content should be judged in conjunction with the patient’s condition. It is recommended that patients should follow the doctor’s instructions and have regular checkups so as to avoid delaying the condition.