Hemorrhoids are a chronic disease in which one or more soft venous masses are formed by stasis, dilation, and flexion of the venous plexus at the base of the anorectum and anal mucosa. Is hemorrhoids common in China In China, hemorrhoids are the most common anorectal disease, and there is a saying that “nine out of ten men have hemorrhoids” and “ten out of ten women have hemorrhoids”. They can develop at any age, and the older you are, the higher the incidence. The reason for hemorrhoids 1, anatomical reasons: people located in a standing or sitting position, the anorectum is located in the lower, the role of gravity and organ pressure, the venous reflux resistance, plus the anorectal veins lack of venous valve (to prevent blood flow backwards one-way valve), so the blood flow is more likely to stagnate and cause venous plexus tortuosity, expansion. In addition, the pressure of fecal mass and muscle on the vein will also affect the venous reflux. 2, local stimulation or eating habits: the anal part of the cold, heat, infection, diarrhea, constipation and excessive drinking or spicy food can stimulate the anal part, resulting in venous congestion and expansion, affecting venous reflux. 3.Occupational factors: long sitting, long standing or long-term weight-bearing distance travel affect venous reflux, causing venous overfilling; and because of the amount of exercise is too little to slow down intestinal peristalsis, fecal block down slowly; habitual constipation can also stimulate or compress the veins, causing venous reflux disorders. 4, elevated venous pressure in the anus: patients with cirrhosis or heart failure, venous reflux in the anus is blocked, which leads to venous congestion and dilatation, and elevated venous pressure. 5.Increased intra-abdominal pressure: abdominal tumors, prostate hypertrophy, pregnancy, squatting too long, eating too much can increase intra-abdominal pressure, affecting the venous reflux of the anus. What are the high incidence of hemorrhoids 1, white-collar workers: white-collar workers are sitting all day, which will make the pelvic blood flow slow, hemorrhoidal vein filling, if the lack of exercise, like to eat spicy and other stimulating food, that is more likely to trigger hemorrhoids. 2, big-bellied bosses: “success and fame” after a significant reduction in activity; coupled with a lot of socializing, often smoking, drinking, staying up late, a variety of meals on the unreasonable structure of the diet, etc. is likely to trigger hemorrhoids. 3, drivers: sedentary lead to abdominal blood flow slowdown, lower limb venous blood circulation is blocked, rectal veins are prone to varicose, blood stasis, easy to trigger hemorrhoids. 4, pregnant women: during pregnancy the pregnant woman’s pelvic artery blood flow increases, as the fetus develops the uterus grows, and will compress the pelvic cavity, so that the blood return within the hemorrhoid vessels is impeded; plus pregnant women often have difficulty defecating or constipation, which can trigger hemorrhoids or make them worse. 5, constipated patients: the increase in anal pressure, muscles and other soft tissues overstretched resulting in poor blood supply, rectal mucosa edema prominent, prone to hemorrhoids. 6, elderly patients with hemorrhoids: elderly patients with slow intestinal peristalsis, high incidence of constipation, high incidence of hemorrhoids. The skin and rectal mucosa junction has a jagged ring-like line, which is medically known as the dentate line. Hemorrhoids are divided into three categories using the dentate line as a boundary: internal, external, and mixed hemorrhoids. The hemorrhoids that appear above the dentate line are called internal hemorrhoids, the hemorrhoids that appear below the dentate line are called external hemorrhoids, and the hemorrhoids that appear above and below the dentate line are called mixed hemorrhoids.