Patients with bleeding from the buttocks are most commonly seen bleeding from the anus. There are many reasons for bleeding from the anus, often the following: First, bleeding from hemorrhoids: Generally, there will be a swelling prolapsing from the anus, and at the same time there will be fresh blood flowing out. In most cases, the bleeding is relatively small, but when the condition is serious, jet-like bleeding can occur, which needs to be clarified by going to the hospital’s general surgery or anorectal surgery. If the disease, you can give conservative treatment and sitz bath treatment, and if necessary, surgery. Second, anal fissure: while bleeding, there may be strong pain, which needs to be clarified by anal finger diagnosis and anoscopy, etc. Third, abnormal growths: may be caused by the growth of polyps in the anus or even malignant tumors, which need to be clarified by anoscopy or colonoscopy, etc. During the treatment period, you should avoid drinking alcohol and do not do too strenuous exercise.