Symptoms of recurrence of rectal cancer after surgery may vary depending on individual’s physical condition, tumor location, tumor size, pathological stage, etc. The main clinical symptoms include change of bowel habit, appearance of lumps, pain and so on. 1. Change of defecation habit: patients’ post-surgery recurrence may have change of defecation habit and stool character, such as pus stool, thinning of stool shape, persistent constipation, constipation and diarrhea alternately. 2. Appearance of lumps: Patients with recurrence of rectal cancer after surgery may feel nodular lumps under the skin of perineum, which are hard and accompanied by pressure and pain. 3. Pain: patients with recurrence of rectal cancer after surgery will have perineal drop, sacrococcygeal pain, pain radiating to the lower limbs, edema and other symptoms. Rectal cancer patients should have regular follow-up after surgery. If the above symptoms or other discomforts occur and recurrence is suspected, they should consult doctor in time and give targeted treatment under doctor’s guidance.