Pain in the abdomen during menstruation is also clinically known as dysmenorrhea. The causes of dysmenorrhea are relatively many, such as primary dysmenorrhea and secondary dysmenorrhea. Primary dysmenorrhea is mainly due to individual differences. During menstruation, the endometrium sheds its lining, causing the body to secrete a large amount of prostaglandins, which will cause the uterine smooth muscle to contract, thus causing pain in the lower abdomen. Secondary dysmenorrhea is often caused by endometriosis, pelvic inflammatory disease, abnormal development of the uterus, etc. Different treatments are given according to different diseases, and the symptoms of dysmenorrhea can be relieved. In addition, it is recommended that women must pay attention to keeping warm during menstruation, do not drink ice-cold drinks, do not eat cold food, to avoid the possibility of causing dysmenorrhea.