Internal hemorrhoids, external hemorrhoids, and mixed hemorrhoids are literally understood as internal hemorrhoids that grow inside the anus, external hemorrhoids that grow outside the anus, and mixed hemorrhoids that are internal and external hemorrhoids fused together. But just because internal hemorrhoids are inside the anus doesn’t mean they won’t come out outside the anus, so they can be divided into four stages depending on the severity. The clinical manifestation of stage I internal hemorrhoids is blood in the stool and no anal swelling is prolapsed; the clinical manifestation of stage II internal hemorrhoids is blood in the stool and the anal swelling can be retracted by itself after it is prolapsed; the clinical manifestation of stage III internal hemorrhoids is blood in the stool and the anal swelling needs to be retracted by hand after it is prolapsed; the clinical manifestation of stage IV internal hemorrhoids is blood in the stool and the anal swelling cannot be retracted after it is prolapsed, that is, it cannot be retracted by hand even if it is retracted by hand, or after it is retracted, it will The clinical manifestations of stage IV internal hemorrhoids are blood in the stool and inability to return the swelling after it has prolapsed. The external hemorrhoids can be divided into four types according to different clinical symptoms, including thrombosed external hemorrhoids, inflammatory external hemorrhoids, connective tissue external hemorrhoids, and varicose external hemorrhoids. Mixed hemorrhoids are internal hemorrhoids and external hemorrhoids fused together, and are a relatively more serious type.