According to the medical history, anal physical examination, anorectal finger examination and anoscopy, the diagnosis is made with reference to the classification of hemorrhoids: internal hemorrhoids, which are located in the mucous membrane inside the anus, occur above the dentate line of the anal canal and are generally painless, with blood and prolapsed hemorrhoids as the main symptoms. According to the degree of internal hemorrhoids and clinical manifestations, there are three stages: stage I internal hemorrhoids with blood during defecation, no prolapse, nodular elevation of the 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 increased abdominal pressure, and need to be returned by hand. The external hemorrhoid is located near the inner side of the anal opening, and it is located below the dentate line, with pain and lumps as the main symptoms. Depending on their pathological characteristics, they can be divided into four types: varicose veins, connective tissue, thrombotic and inflammatory. Among them, 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. Some of them may be accompanied by general discomfort and fever. The one that has both is “mixed hemorrhoid”. The main clinical symptoms are prolapsed rectal mucosa and skin, swelling, pain, and recurrent infection. If there is a slight suspicion, further examination should be done to exclude benign and malignant tumors of the colon, rectum and anal canal and inflammatory diseases. When you see bleeding, dripping blood or blood or pus in stool, most of them are caused by hemorrhoids; bleeding from anal fissure is bright red, accompanied by severe anal pain; blood in stool, dark red blood or dark stool color, that is caused by bleeding from digestive tract. If a swelling comes out of the anus during defecation, accompanied by anal moistness or mucus, most of them are caused by internal hemorrhoid prolapse or rectal mucosa prolapse; if there is a lump in the anus with intense pain and the lump is dark in color and round in shape, it may be suffering from thrombosed external hemorrhoid; an anal lump with local fever and pain is a symptom of perianal abscess; palpation of the anus with strips of mounted material and a small amount of pus coming out from the ulcer is a manifestation of anal fistula.