Nursing care for patients with postoperative pain of colon cancer includes monitoring vital signs, dietary care, early activity, drainage tube care and so on. 1. Monitoring vital signs: observe patients’ vital signs after operation, including temperature, heart rate and blood pressure, etc., and report abnormalities to doctors immediately. 2. Dietary care: fasting after the operation, and then consuming liquid or semi-liquid diet according to the patient’s degree of recovery, and slowly returning to ordinary food. 3. Early activity: so you should get out of bed as early as possible, or passive activity, to prevent postoperative venous thrombosis and tissue adhesion. 4. Drainage tube care: patients will have a lot of drainage tubes after the operation, and the care should be properly categorized and put all kinds of drainage tubes to prevent extrusion and dislocation.