Determining whether a patient has endometriosis can be done in the following ways: first, clinical symptoms. Most patients with endometriosis have dysmenorrhea, which has a history of progressive worsening and is poorly treated with general pain medications. Patients may also have prolonged menstrual cycles, increased menstrual flow or irregular vaginal bleeding. If the uterus is significantly enlarged or if there is endometrial destruction, the patient may experience secondary infertility or habitual miscarriage. Second, by imaging or laboratory tests. Patients with endometriosis can have an ultrasound to detect ectopic lesions, and blood CA125 levels can be elevated by examination. Third, by laparoscopic exploration and pathological examination. Laparoscopic exploration can clearly visualize the endometriosis lesions, and surgical delivery for pathological examination can finally confirm whether the patient has endometriosis.