First, the cause of hemorrhoids 1, anatomical factors: rectal veins and their branches lack of venous valves, blood is not easy to return, easy to stasis. The vein passes through the loose tissue of submucosa, lacks stent fixation around it, and is easy to expand and flex. 2.Genetic relationship: the wall of vein is congenitally weak, can not tolerate intravascular pressure, and gradually expand. 3.Increased pressure of portal vein: due to hepatic sclerosis, high pressure of portal vein makes anal vein congested with blood and increased pressure, which affects the blood return of rectal vein. 4.Increased intra-abdominal pressure: impede the venous blood return. Such as pregnancy, abdominal tumor. 5.Occupational factors: prolonged standing, sedentary, affecting venous return, slow blood flow in the pelvis and congestion of intra-abdominal organs, causing hemorrhoidal vein overfilling, decreased venous wall tension, blood vessels are prone to stasis and dilatation. 6, bad habits: excessive drinking and eating spicy food, can stimulate the anus and rectum, make the hemorrhoidal vein plexus congestion, affect the venous blood return. Sitting on the toilet reading books and newspapers. Eat less vegetables, drink less water people easy constipation, affect the hemorrhoidal vein blood return. Second, the prevention of hemorrhoids 1, develop good habits: eat more vegetables, fruits, drink more water, avoid constipation. Drink less alcohol, eat less spicy food. Adopt the habit of regular defecation, try to shorten the time of each defecation, each time after defecation with warm water fumigation of the anus local, improve the local blood circulation in the anus. Avoid standing and sitting for a long time. 2, strengthen exercise: physical exercise is beneficial to blood circulation, can promote gastrointestinal peristalsis, improve pelvic congestion, prevent constipation, prevent hemorrhoids. With the idea, consciously upward contraction of the anus, morning and evening 1 time, each time to do 30 times, exercise anal sphincter, can improve hemorrhoidal venous return. Third, the treatment of hemorrhoids (a), drug treatment: the purpose is to eliminate the symptoms. Mainly applicable to I, II degree internal hemorrhoids. Including the protection of mucous membrane suppository, ointment, oral medication and other various therapies. Internal medication is more: Chinese medicine Sophora pills, hemorrhoid pills and Western medicine Mai Zhi Ling, eliminating the stop and so on. External medications include anal suppositories, external ointments, and steaming lotions. Such as hemorrhoids Ning suppository, taining suppository (compound coriander acid ester suppository), compound elimination of hemorrhoids suppository, Rongchang anus tai suppository, Ma Yinglong hemorrhoids cream and so on. When the stool is dry, take lactulose or liquid paraffin 15 ml orally twice a day. (B), surgical treatment mainly applies to I, II degree internal hemorrhoids, mixed hemorrhoids and including external hemorrhoid thrombosis, including non-surgical treatment is ineffective. 1, the rubber ring ligation method: the special 0.2 ~ 0.3cm wide latex ring in the hemorrhoid root, so that the hemorrhoid ischemia necrosis shedding, after the operation there is the possibility of secondary bleeding. 2.Ligation excision: the hemorrhoidal artery suture + mixed hemorrhoids of the external hemorrhoids partially excised, the wound is not sutured, so that it is open healing. The wound healing time is long. 3, ring excision: the ring of mixed hemorrhoids hemorrhoids and part of the rectal mucosa ring excision of a week, and the side of the cut side of the skin and mucosa on the lower edge to be sutured. Postoperative bleeding and anal stenosis are possible. 4, anastomotic circumferential hemorrhoidectomy (PPH): through the circumferential excision of the rectal mucosa and submucosal tissues immediately above the dentate line of the anal cushion, the anal cushion and the anal canal part of the tissue as a whole upward suspension, so that it is no longer downward movement and prolapse, and at the same time, cut off the blood vessels located in the mucous membrane and submucosal supply of the anal cushion, the anal cushion of the postoperative blood supply is reduced, hemorrhoidal mass gradually atrophic, the postoperative pain is mild, the postoperative bowel control ability is not affected, there is no anal stenosis, fecal stenosis. There are no complications such as anal stenosis and fecal incontinence.