Currently, dysmenorrhea is divided into primary dysmenorrhea and secondary dysmenorrhea. Primary dysmenorrhea refers to the absence of organic lesions in the reproductive organs, and is also known as functional dysmenorrhea, which is most common in adolescents, unmarried or married people who have not had children, and such dysmenorrhea can be relieved or disappear after childbirth. Secondary dysmenorrhea is caused by organic lesions in the reproductive organs. According to the patient’s complaint, there is lower abdominal pain during menstruation, and there is no positive sign during gynecological examination, primary dysmenorrhea can be diagnosed clinically, but other diseases that may cause dysmenorrhea must be excluded from the diagnosis. Secondary dysmenorrhea occurs several years after menarche, and most of the symptoms are accompanied by symptoms of primary diseases, such as excessive menstruation, infertility, placement of intrauterine devices, or history of pelvic inflammatory disease, gynecological examination can detect organic lesions causing dysmenorrhea, and ultrasonography can find out whether there are organic lesions in the pelvic cavity, such as uterine fibroids, ovarian cysts, pelvic inflammatory disease, etc. Laparoscopy can help visualize the situation in the pelvic cavity. Laparoscopy can visualize the situation in the pelvis to help differential diagnosis, and if there are organic lesions, they can be treated at the same time. For the examination of dysmenorrhea, it is important to identify primary and secondary, that is, except whether there is organic lesion in the genitals.