Hemorrhoids are a very common disease. The folk saying “nine hemorrhoids in ten men and ten hemorrhoids in ten women” may be exaggerated, but the incidence of hemorrhoids in China is really very high, according to information, its incidence rate is 30% to 50%, there are two main views on the formation mechanism of hemorrhoids: the traditional concept is that hemorrhoids are the formation of the lower rectum or the anal canal of the terminal veins that become tortuous, dilated and The traditional view is that hemorrhoids are the formation of a bulging venous mass due to the tortuous and dilated terminal veins of the lower rectum or anal canal. However, after research, there is a new understanding of hemorrhoids, which are the anal cushion, an anatomical structure that everyone has. In normal people, there is a special tissue structure called “anal cushion” under the mucous membrane at the end of the anal canal and rectum, which, together with the anal sphincter, has a fine gate function to assist in the normal closure of the anus and to control defecation. Under normal circumstances, the anal cushion is loosely attached to the muscle wall of the rectal canal and is pushed down by abdominal pressure during defecation, and then retracted into the canal after defecation by its own contraction function. When the anal cushion becomes congested, hypertrophy, relaxation and fracture, its elastic retraction is weakened, thus gradually moving down and prolapsing, and leading to venous plexus stasis and varices, which over time form hemorrhoids. The main manifestations of hemorrhoids are bleeding stools, prolapsed hemorrhoids, perianal pain, and anal itching. The internal hemorrhoids are divided into internal, external and mixed hemorrhoids, and the internal hemorrhoids can be divided into 1~4 degrees according to the severity of the symptoms. 1~2 degrees are lighter and 3~4 degrees are heavier. If you have external hemorrhoids, you can feel soft nodules at the anal opening. Simple external hemorrhoids have no obvious symptoms, but if they develop into thrombosed external hemorrhoids, severe pain occurs due to vascular spasm, and the pain increases when defecating or coughing. The main symptoms of internal hemorrhoids are hemorrhage and prolapsed nucleus. Painless intermittent blood after stool is a characteristic of internal hemorrhoids and an early symptom. The bleeding does not mix with feces, and in heavy cases the bleeding can be jet-like, and repeated bleeding can cause anemia. When internal hemorrhoids develop to a certain degree, they can still prolapse outside the anus, and in mild cases, they can retract automatically; if the prolapse is more serious, they must be pushed back by hand or rest in bed before they can be retracted; otherwise, the prolapsed hemorrhoids will be embedded. In addition to internal and external hemorrhoids, there are also mixed hemorrhoids, which have the performance of the above two types.