Patients undergoing anal preservation surgery for rectal cancer often suffer from different degrees of diarrhea, constipation, fecal incontinence and post-operative heaviness within 6 months after surgery due to the removal of most of the rectum, especially the rectal potbelly, and the transection of the nerves existing in the rectum, as well as the impact of the surgical operation on the anal sphincter, resulting in a short period of dysfunction of the anal sphincter. Within 6 months after surgery, there are often different degrees of diarrhea, constipation, incontinence, and urgency; some patients still have these problems 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. In this case, along with dietary adjustment, medication and warm water bath, strengthening anal function exercise is a simple and effective natural treatment. 1, diet adjustment Choose to eat high protein, high calorie, high vitamin, easy to digest with the right amount of fiber, light soft food. If you have constipation, add honey or sesame oil to the food, drink more water, avoid spicy and stimulating, dry and hard, coarse fiber food and beans, garlic, dairy and other easy to produce gas food. 2.Medication For patients with stools more than 10 times a day and unformed stools can take oral piperidine or loperamide (Emmenthal) as appropriate until the stools are formed, or the stools are controlled 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; it can reduce the inflammation and edema in the anus and promote the recovery of anal contraction function and defecation reflex. However, it is important not to take a long time squatting position when taking a sitz bath to avoid increasing abdominal pressure and anastomotic tension and 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, resulting in excessive fatigue, in order to feel comfortable. The method is as follows: lean your legs together at the two buttocks, tighten them in the direction of the anus, and under deep breathing, do anal lifting and anal retentive (anal clamping) exercises; repeat the exercises 20-30 times, once every 3-4 hours; standing, sitting and lying down exercises are all acceptable. For weak patients, the number of exercises can be reduced according to the situation.