Patients who underwent anal preservation surgery for rectal cancer often have different degrees of diarrhea, constipation, fecal incontinence, urgency, etc. within 6 months after surgery due to the removal of most of the rectum and the transection of the nerves in the rectum and the impact of surgical operation on the anal sphincter, resulting in short-term dysfunction of the anal sphincter. In some patients, these problems still exist even 1 year after surgery. The occurrence of this situation not only greatly reduces the quality of life of patients, but also easily leads to embarrassment, embarrassment, depression and other adverse psychological effects. For this situation, in conjunction with dietary adjustment, medication and warm water baths, strengthening the exercise of anal function is a simple and effective natural therapy. 1, diet adjustment: choose to eat high protein, high calorie, high vitamin, easy to digest with the right amount of fiber, light soft food. Constipation can add honey or sesame oil in the food, drink more water, avoid spicy stimulation, dry and hard, coarse fiber food and beans, garlic, dairy and other easy to produce gas food. 2, drug treatment: for the number of stools more than 10 times a day and the stool is not shaped patients can take oral compound phenylephrine or loperamide (easy to stop) as appropriate until the stool is shaped, or stool control below 3 times a day can be discontinued. 3, warm water or 1/5000 potassium permanganate solution sitz bath: 1-2 times a day, 15-20 minutes each time; can reduce the inflammation and edema in the anal area, and promote the recovery of anal contraction function and defecation reflex. But pay attention to the sitz bath can not take a long time squatting position, so as not to increase the abdominal pressure and anastomotic tension, increasing the occurrence of anastomotic complications. 4, anal function exercise: Not only is it beneficial to the recovery of anal function after surgery, but it can also promote local blood circulation, reduce stasis and expansion of hemorrhoidal veins, and treat and prevent hemorrhoids. It should be noted that when doing anal function exercise, both persistent and not in a hurry, causing excessive fatigue, in order to feel comfortable. The method is as follows: the two legs close to the two buttocks, tighten in the direction of the anus, in the case of deep breathing, do anal lifting and anal closure (anal clamping) exercises; so repeatedly 20 to 30 times, every 3 to 4 hours exercise once; standing, sitting, lying exercises can be. Weak patients, according to the situation, can reduce the number of exercises.