Dysmenorrhea is categorized into primary dysmenorrhea and secondary dysmenorrhea, with different specific causes. The main hazards are interference with study, work and socializing, and in serious cases, it may affect fertility. Primary dysmenorrhea is related to the increase of prostaglandin content in the endometrium. When a woman has her menstrual period, she will produce prostaglandin, a hormone that will cause excessive contraction of the uterus with vasospasm, resulting in uterine ischemia and hypoxia, and dysmenorrhea will occur. There are more causes of secondary dysmenorrhea, such as endometriosis, adenomyosis, pelvic infection, uterine fibroids or endometrial polyps, and reproductive tract abnormalities. Dysmenorrhea itself does not cause other complications. The main danger of primary dysmenorrhea is that it can affect normal work and study as well as socializing. However, secondary dysmenorrhea is usually caused by diseases, the pain symptoms are more obvious, and will be accompanied by some other symptoms. It will have a greater impact on the body, which will directly affect life, work and health, and will increase the risk of ectopic pregnancy. Dysmenorrhea patients are recommended to go to the hospital for a detailed examination to clarify the specific cause of the disease, and then treat the symptoms, usually pay attention to abdominal warmth, pay attention to personal hygiene.