Diet and defecation 1, the day after surgery to liquid diet (such as rice porridge, noodles, etc.), do not eat fruit, do not drink milk, soy juice and other gas-producing beverages, the next day can be a normal diet, the third day to start defecation. After that, eat more vegetables and fruits, keep the stools smooth and shaped, in order to fully expand the anus, avoid constipation and diarrhea, in order to prevent bleeding and edema of the incision. 2.If the patient is usually constipated, the first time to defecate after the operation can be assisted by Keselen. Do not hold back the stool for fear of pain, which will aggravate constipation or fecal impaction and increase the pain of defecation. 3, avoid squatting for a long time when defecating, so as not to cause edema of the anal margin incision, a defecation is best not more than 5 minutes. When defecating, try to defecate once, avoid multiple defecation, if the stool reaches the rectal pot belly can not be timely defecation is easy to cause dry head, will increase the pain of defecation. 4, avoid eating cold and spicy products, should not drink milk and soy juice and other drinks that produce more gas. Second, bleeding and pain because hemorrhoidal fistula surgery are open wounds, postoperative defecation, walking and changing medication can stimulate the incision resulting in pain and bleeding, pain can be oral pain medication; generally a small amount of bleeding can be stopped, do not have to worry too much about it, if the bleeding is more or more than the bleeding should be notified to the health care personnel. Third, urinary retention, that is, difficult to relieve urination, which is related to intraoperative injection of anesthetic drugs, pain caused by the anal – urethral sphincter spasm, anal bandage is too tight and the patient is overly nervous. Generally speaking, patients are advised to drink a moderate amount of water after the operation, and urinate promptly when they feel the urge to urinate, and do not wait for the feeling of bloating to become obvious before relieving themselves. Mild urinary retention can be used hot compresses, massage of the abdomen, listening to the sound of running water when urinating, etc., if necessary, need to insert a urinary catheter catheterization, which will produce a certain amount of trauma and pain, the patient should be psychologically prepared. Four, postoperative long-lasting analgesia The use of anal subcutaneous melphalan injection nerve block plays a long-lasting analgesic effect, but there are the following problems that patients need to pay attention to: 1, due to the blue color of melphalan, it can be absorbed through the bladder after the injection, and the postoperative urination may be light blue, and it can be restored to normal after a few times of urination in general; 2, due to the nerve blocking effect of melphalan, some patients may have local burning sensation in the anus within 4-6 hours after the injection, which may cause pain and suffering, patients should be psychologically prepared. Because of the nerve blocking effect of Melphalan, some patients may have strong localized burning sensation in the anus within 4-6 hours after injection, or even unbearable. Some patients may have numbness of anus, decreased defecation sensation, or even cannot control defecation, which can be recovered by themselves. Fifth, anal swelling with a sense of defecation, air leakage, overflow of stool because of postoperative anal ligation hemorrhoids hemorrhoids, resulting in anal swelling discomfort, there will be a sense of defecation; at the same time, because of the incision in the anus and hemorrhoids hemorrhoids ligation hemorrhoidal swelling caused by the anus is not closed tightly, there is leakage of intestinal mucus and sparse spillage of stools, it is not anal incontinence, to be ligature line fall off, the incision healing symptoms will gradually disappear. Sixth, postoperative medication change After the operation from defecation to change the medication, there are traditional Chinese medicine fumigation, photon therapy instrument irradiation, muscle jade red gauze for medication and other processes, a change of medication takes more than half an hour. After each bowel movement, the patient will use warm water to clean the anus and then go to the medicine changing room to change the medicine. There will be pain and discomfort or a small amount of bleeding when changing the medication, and after changing the medication, female patients should avoid wetting the gauze wrapped around the anus when urinating. Generally, it is enough to change the medicine once a day to minimize the irritation and cost to the wound.