Female abdominal pain below the navel, be alert to the possibility of urinary system diseases, reproductive system diseases, intestinal diseases and other causes. 1. Urinary system diseases: pain in the abdomen below the navel, most commonly seen in bladder diseases, such as cystitis, bladder tumors, etc., may also be accompanied by urinary urgency, urinary frequency and other symptoms. 2. Reproductive system diseases: such as endometritis, pelvic inflammatory disease, adnexitis, pelvic tumors, etc., mainly cause pain in the lower abdomen, and some women have more obvious pain during menstruation, accompanied by abnormal vaginal bleeding. 3. Intestinal diseases: mostly seen in the sigmoid colon, rectum, cecum inflammation or tumor, which may be accompanied by changes in bowel habits and traits. Female belly button abdominal pain may also be caused by other diseases, it is best to go to the hospital in a timely manner to do the relevant examinations, such as abdominal color, colonoscopy and other tests to make a clear diagnosis, targeted treatment.