Surgery is the main means of treatment of anal and intestinal diseases, however, any surgery will bring some damage to the patient, and due to the different physical condition of the patient, the condition of light, heavy, slow and urgent points, the surgery also has the size of the difference, so some patients often appear certain reactions and complications. First, pain, pain after anal surgery is divided into two kinds of pain, reflex pain and inflammatory pain. Because the human anus area is rich in nerves, is a crural innervation, pain is very sensitive, so surgical trauma and inflammatory stimuli can lead to pain. Pain has the following reasons: 1, the patient is extremely sensitive to pain due to fear, the anal sphincter is in a state of tension, the slightest stimulus can cause pain. This kind of pain mainly occurs during surgery and postoperative dressing change. 2.Postoperative infection, wound edema, constipation, foreign body stimulation can also cause pain. 3.Small anus, tearing the anal canal skin with force during bowel movement can cause pain. 4, the trauma surface is large, the scar is too heavy after healing, and the scar contracture compresses the nerve endings and causes pain. Treatment: mild pain does not need to deal with, the pain is severe according to the situation of separate treatment. Such as oral or injection of painkillers such as prednisolone. Difficulty in defecation, lactulose. Scarring pain, mild pain without treatment, severe pain with Chinese medicine sitz bath fumigation. Inflammatory pain, anti-inflammatory treatment, such as inflammation has been pus should be cut in time. Second, anal edema anal margin edema is also a common reaction after anorectal surgery, edema will exacerbate anal pain, edema occurs for a variety of reasons. 1, too much anal margin tissue is excised or ligated during surgery, too many incisions and unreasonable choice of incision, etc., resulting in local blood and lymphatic reflux obstacles, increased vascular permeability, water retention in the tissue interstitial space. Inadequate stripping of the venous mass at the anal verge. 3.Uneven filling of postoperative dressing and difficulty in urination and defecation, squatting for too long. Treatment: mild edema can be slowly absorbed by itself, no need to repeatedly trim. You can orally take Mai Zhi Ling, use the poisonous soup to wash, use 40% hypertonic saline to apply wet compresses when changing the local medicine, or use Jinhuang paste to apply externally. If the edema is very serious, it can be operated as decompression incision. Third, abdominal distension, abdominal distension after anorectal surgery is mainly due to: 1, anesthesia, especially lumbar and sacral anesthesia is obvious, appeared in the day after surgery. 2.The dressing for bandaging the wound is too much and too tight, which makes the anus unable to ventilate. 3, postoperative bed rest, poor intestinal peristalsis. 4.Over-eating milk, sugar and other foods. Treatment: the first abdominal hot compresses, after seeking the doctor’s consent to appropriate relaxation of bandages bandaged wounds, may also request the doctor to give the anal tube exhaust, if necessary, oral qi to help digestive medicine, xiaoxiang shunqi pills, four mill soup, and so on. Fourth, blood in the stool, anal surgery is mostly open wounds, mainly using local compression to stop bleeding, a few days after the operation each time a small amount of bleeding during defecation, after the bowel movement to stop, is a normal situation. If the bleeding does not stop, you should find a doctor immediately. There are the following reasons for blood in the stool after anal surgery: 1, the small forgotten arteries were not ligated during the operation or the ligature line fell off after the operation. 2.The wound dressing is not compressed. 3.Bowel movement on the same day after surgery. 4.Intraoperative use of epinephrine and postoperative bleeding from small arteries. 5.Injection of sclerosing necrosis agent, hemorrhoid necrosis infection hemorrhage. Treatment: first identify the cause of bleeding and bleeding site, local through the use of gelatin sponge, Yunnan Baiyao and pressure bandage or ligation of bleeding points. Systemic use of hemostatic drugs, such as lithium, vitamin k, hemostatic minerals, etc., and moderate use of antibiotics. Those who have lost more blood should also be rehydrated, transfused, and correct the water electrolyte acid-base balance. Ask the patient to control the stool, try to bed rest. V. Difficulty in bowel movement 1. Patients are afraid of anal pain caused by defecation, and intentionally prolong the time of defecation, so that the water in the feces is over-absorbed and dried up, resulting in difficulty in discharge. 2.Excessive tension during the operation, sympathetic nerve excitation, inhibit intestinal peristalsis. 3.Bed rest and reduced activities after surgery slow down the peristalsis. 4.Diet with less fiber. Treatment: the first postoperative defecation after anorectal surgery can be used to assist defecation, and later can take some laxatives to prevent, such as honey, qi yong laxative oral solution, etc., can also take du secret grams, lactulose to soften the stool.