The anal pain should depend on the disease causing the anal pain, generally can be divided into three cases: first, thrombosed external hemorrhoids, mostly due to persistent embedded hemorrhoids, resulting in increased stasis of hemorrhoidal veins, thus forming thrombosed external hemorrhoids, manifested as severe anal pain. In this case, you can take a 1:5000 potassium permanganate bath to improve the edema of the hemorrhoid and immediately go to a regular hospital for surgical treatment. Secondly, perianal abscess is an acute purulent infection of the rectum and perianal space, with clinical manifestations of severe anal pain and volatile masses palpable in the anus. At this time, it should be treated surgically, mainly by perianal abscess incision and drainage, and supplemented with cephalosporin anti-infection treatment. Third, anal fissure, mostly seen in patients with long-term constipation, chronic ulcerative changes in the anal canal, manifested as blood in the stool and accompanied by anal pain, the pain is mostly relieved after defecation, at this time should go to the regular hospital anorectal surgery for anal fissure excision.