Postoperative wounds of rectal cancer can generally heal in 2-3 weeks, depending on the patient’s postoperative recovery. Rectal cancer patients mainly undergo anal resection surgery, which has a wider scope, more thorough surgical resection and higher probability of cure, but patients’ postoperative wounds are also more obvious in size, and the healing time also takes 1-2 weeks to heal. However, if the rectal cancer patients are older and in poorer physical condition, with diabetes and other underlying diseases, the postoperative wound healing time will take about 2-3 weeks or even longer. After rectal cancer surgery, patients need to pay attention to the cleanliness of the wound to prevent the wound from secondary infection, and if patients have obvious pain after surgery, they can take ibuprofen, amoxicillin and other medicines to reduce inflammation and pain under the guidance of doctor. It is suggested that patients should adjust their diet after surgery, try not to eat spicy and stimulating food to avoid aggravating the condition, and inform the doctor in time if they feel uncomfortable.