The causes of anal drop pain are as follows: First, the most likely cause is due to rectal inflammation, which can be a bacterial infection or a viral infection, and may be caused by autoimmune enteritis. Second, anal cramping pain may also be due to rectal malignancy. Third, anal cramping pain may be caused by local infection at the anus, such as hemorrhoids combined with infection, or thrombosed external hemorrhoids caused. Fourth, anal cramping pain may also be due to fluid accumulation caused by some lesions in the abdominal cavity, especially female gynecological inflammation, such as when pelvic inflammatory disease occurs, pelvic fluid stimulates the rectum and perianal area, causing anal cramping pain. If anal cramping pain occurs, it is recommended to go to a regular specialist hospital for systematic examination and clear diagnosis in a timely manner. Then, according to the different causes, take the corresponding treatment measures.