There are many factors that can cause stomach pain during menstruation: first, the increase in the level of prostate hormone secretion in women’s bodies during menstruation can cause stomach pain. Secondly, it is possible that women do not pay attention to the cold in the small abdomen during menstruation, because the cold in the abdomen may lead to contraction of the uterine muscles, and menstruation may not be discharged smoothly and cause pain. Again, women may eat cold food during menstruation, such as watermelon, ice cream or sorbet, or drink cold drinks. There are also gynecological diseases, the most common of which are endometriosis and chocolate cysts. Finally, gynecological inflammation, such as pelvic inflammatory disease, endometritis, etc., if the patient’s abdominal pain is relatively mild, it is considered physiological. When the abdominal pain is severe and more serious, you need to go to the hospital for examination to clarify the cause.