There are more causes of abdominal pain in women after menstruation, the most common are the following: 1. It may be due to women not paying attention to hygiene during menstruation or having sex during menstruation, resulting in infection of the female reproductive system, especially when suffering from pelvic inflammatory disease or adnexitis, the symptoms of abdominal pain will appear. 2. The actual pain may be caused by the patient’s low immunity after the menstrual period and the cold phenomenon in the abdomen, such as the woman’s abdomen is not well warmed, or eating too cold food. 3, if suffering from cervical disease, may also appear abdominal pain. It is recommended that patients should go to the hospital for gynecological examination and ultrasound to further clarify the diagnosis and then treat the symptoms.