Internal hemorrhoids are further divided into internal hemorrhoids, external hemorrhoids, and mixed hemorrhoids according to the location of occurrence. Internal hemorrhoids are generally painless, with blood and prolapsed hemorrhoids as the main symptoms, and in severe cases, they can squirt blood and cannot be returned by themselves after prolapsed hemorrhoids, as well as have difficulty in passing stool, cannot be wiped clean after passing stool, and have a feeling of swelling. According to the degree of internal hemorrhoids and clinical manifestations, there are three stages of internal hemorrhoids: stage I internal hemorrhoids with blood during defecation, no prolapse, nodular elevation of mucosa on the dentate line; stage II internal hemorrhoids with blood during defecation, dripping or shooting blood, prolapsed hemorrhoid nucleus, which can be returned after defecation; stage III internal hemorrhoids prolapsed during defecation or when coughing, exertion, weight-bearing causes increase in abdominal pressure, and need to be returned by hand. External hemorrhoids are located below the dentate line and have pain and lumps as the main symptoms, and there are skin flaps of different sizes and shapes growing around the anus. According to its pathological characteristics, it can be divided into four types: varicose veins, connective tissue, thrombotic and inflammatory. The inflammatory external hemorrhoids are the most common, mainly manifesting as raised skin folds at the anal verge, redness, edema, congestion, pressure pain, increased pain during defecation, and a small amount of discharge, some of which can be accompanied by general discomfort and fever. Mixed hemorrhoids have both internal and external characteristics, and the main clinical symptoms are prolapse of rectal mucosa and skin, swelling, pain, and repeated infection.