Hemorrhoids are a common disease in daily life, “nine out of ten hemorrhoids” is said to be its high incidence. So how are hemorrhoids caused? In surgery for the onset of hemorrhoids there is a doctrine called “anal cushion downward shift doctrine”, the so-called anal cushion, that is, refers to the lower part of the rectum near the anus position, encircling the rectum of the circle of soft tissues, in addition to some loose connective tissues, there are also blood vessels, lymph, when the long-term high intra-abdominal pressure, such as constipation, chronic coughing, etc., will result in anal cushion Inside blood vessel congestion, long-term repeated stimulation will cause the anal cushion to lose elasticity, gradually relax and move down, the internal blood vessel expansion tortuous. These formed the medical said internal hemorrhoids. Internal hemorrhoids, in layman’s terms, are hemorrhoids that occur inside the anus. When internal hemorrhoids develop to a certain extent, they will come out of the anus with the exertion of defecation.