Painful wiping of the buttocks may be related to constipation, or it may be caused by hemorrhoids, anal fissure, perianal abscess and other reasons. 1. constipation: if there is a more serious constipation, especially long-term constipation, because the stool is too dry, hard, in the process of defecation is likely to lead to localized skin ulceration of the anus, resulting in pain in the buttocks. 2. Hemorrhoids: especially with external hemorrhoids, can lead to edema mass in the anal area, due to strenuous exercise or defecation, easy to lead to the anal area of the vein rupture, will lead to wiping pain, but also accompanied by local itching and pain in the anus, and other manifestations. 3. Anal fissure: this disease usually refers to the fissure of the skin layer of the anal canal below the dentate line, which causes severe pain around the anus, especially when wiping the buttocks, the pain symptoms are especially obvious, and can be accompanied by bleeding during defecation, anal itching and other symptoms. 4. Perianal abscess: usually refers to the abscess formed in the rectum and anal canal tissues or the surrounding interstitial space of infection, often touch the abscess when wiping the buttocks, thus causing pain when wiping the buttocks, and can be accompanied by local redness, swelling, pressure and pain, itching and other symptoms. Wiping pain may also be caused by other reasons, it is recommended to consult a doctor as soon as possible, after a clear diagnosis of the causative factors, to give targeted treatment.