The causes of abdominal cramps and anal cramps may be caused by hemorrhoids, perianal abscess, prostatitis, gynecological inflammation and other diseases. 1. Hemorrhoids: for example, long-term constipation, increased abdominal pressure and other reasons, can make the venous plexus of the anal canal expand, leading to the formation of hemorrhoids. The hemorrhoid nucleus will press or stimulate the perianal nerves, resulting in the appearance of a feeling of swelling in the abdomen and anus. 2. Perianal abscess: when the perianal skin infection will lead to perianal abscess, the inflammatory reaction caused by the disease can make the anus stimulated, resulting in the anus to produce a feeling of bloating, and when the seriousness will lead to abdominal bloating will also appear. 3. Prostatitis: When the prostate gland is inflamed, the surrounding tissues will be stimulated, resulting in abdominal discomfort, while the anus will also be distended, as well as intermittent urination, dribbling and other manifestations. 4. Gynecological inflammation: Gynecological inflammation, such as pelvic inflammatory disease, uterine adnexitis, etc., will make the pelvic cavity stimulated by inflammation, inflammatory reaction, resulting in abdominal distension, anal distension and other symptoms. When abdominal distension, anal distension, it is recommended that patients go to the hospital in a timely manner, to clarify the cause of the disease, in order to facilitate targeted treatment, so as not to delay the condition.