The pain below the navel can be caused by many causes, and can be analyzed from the following points: 1, women’s menstruation, before and after the period can appear, this situation pay attention to warmth, rest, drink more brown sugar water after the symptoms can be improved, severe cases can be given painkillers symptomatic treatment. 2, pregnant women ectopic pregnancy, endometritis, pelvic inflammatory disease, adnexitis, etc. can cause, need to further ask the patient’s menstrual history, vaginal secretions, etc., to perform abdominal ultrasound, vaginal discharge examination can be clearly diagnosed. The diagnosis of ectopic pregnancy, endometritis, pelvic inflammatory disease, adnexitis, etc. can be caused by pregnant women, who should be further questioned about their menstrual history, vaginal discharge, etc., and the diagnosis can be clarified by performing abdominal ultrasound and vaginal discharge examination. Most of them are accompanied by an increase in the number of stools or a change in the nature of the stool, and colonoscopy can make a clear diagnosis. Therefore, when the patient appears lower abdominal pain is to pay attention to, timely to the hospital to clarify the cause to avoid delaying the disease.