Causes of dysmenorrhea: 1. primary dysmenorrhea, related to the rise of prostaglandin content in menstrual blood. 2. secondary dysmenorrhea, related to adenomyosis, pelvic inflammatory disease, endometriosis. The relief of dysmenorrhea: pay attention to rest during menstruation, avoid getting cold and cold, pay attention to heat preservation. At the same time, you can take ginger candy water orally or apply hot water bags locally to the lower abdomen. If the symptoms are not relieved by the above treatment, you can take oral analgesic medication, such as fenbuterol and furosemide; you can also take oral pain relief medication from traditional Chinese medicine, such as Yuanhu pain relief tablets. For patients with dysmenorrhea, they can also take oral short-acting contraceptive drugs, such as Da-Ying-35, Mafulon, and Ursine.