Ten men nine hemorrhoids represents a relatively high incidence of hemorrhoids, hemorrhoids have many triggers, each person can not avoid the triggers in their daily work, hemorrhoids are common diseases of the anus, multi-infarct. The triggering factors of hemorrhoids are mainly the following: 1. Anatomical reasons. The anorectum is compressed by gravity and organs when standing or sitting, the upward reflux of veins is obstructed, blood is not easily returned, hemorrhoidal veins pass through the loose tissue of the submucosa, lack of scaffolding around the fixed, easy to expand and flex. 2, occupational relationship. Long standing or sitting affects the venous reflux, and the hemorrhoid veins are overfilled, stagnant and dilated. 3, local stimulation and diet disorder. Cold, heat, constipation, diarrhea, excessive drinking and more spicy, irritating food can stimulate the anus and rectum, causing local congestion and impaired blood return, decreased resistance of the vein wall, and increased pressure within the hemorrhoidal vein. 4, increased intra-abdominal pressure. Because of intra-abdominal tumor, eating too much or constipation squatting toilet for too long, etc., can make the intra-abdominal pressure increase, the anal vein pressure increased, preventing the venous blood return.