Endometriosis can usually be diagnosed through gynecological examination, ultrasonography, pelvic CT and laparoscopy. 1. Gynecological examination: Gynecological examination is the initial way of checking endometriosis, and it can also understand the general condition of endometriosis, usually through the doctor’s palpation or vaginal speculum examination. 2. Ultrasonography: If you want to further determine the size and location of endometriosis, you can go through abdominal ultrasonography or gynecological vaginal ultrasonography, pelvic CT and other examinations. 3. Laparoscopy: If there is no abnormality found through routine examination, but you have infertility, severe menstrual cramps, increased menstrual flow, etc., then you can have a laparoscopy. If there is a need for a clear diagnosis, it is recommended that the patient actively cooperate with the doctor’s examination, the perineum should be well cleaned before the examination, and avoid the examination during menstruation.