If abdominal pain occurs during menstruation, the common cause is due to uterine contraction to promote endometrial shedding caused by pain symptoms are not obvious, belong to the normal physiological changes, generally do not need special medication. If the pain is not obvious, it is a normal physiological change and usually does not require special medication. Generally, the symptoms can be relieved by themselves to disappear after menstruation. On the other hand, it may be caused by gynecological inflammation, such as pelvic inflammatory disease, adnexitis, etc., especially when combined with lumbar pain, lumbar distension, vulvar and vaginal itching, odor, lower abdominal distension and pain symptoms will be relatively obvious, through the examination of ultrasound can be seen in the pelvic cavity accumulation of fluid, diagnosis needs to be actively anti-inflammatory treatment, so as not to continue to aggravate the pelvic pain that leads to chronic. Pay attention to diet and hygiene to prevent recurrence.