Inclusion Criteria:  Dysmenorrhea or non-cyclical pelvic pain lasts for more than 3 months, and the VAS pain score is larger than 30mm diagnosed as endometriosis Willing to participate in clinical trials and sign informed consent  Exclusion Criteria:  Those who have a clear surgical treatment plan due to various diseases within 6 months Suspected or suffering from malignant tumor Hemoglobin less than 8g/dl women with contraindications to the use of aspirin or oral contraceptives with other painful disease other than endometriosis Active bleeding from other areas or undiagnosed abnormal vaginal bleeding drug adminstration within 3 months including oral contraceptives, dienogest, Mirena or GnRH-a preparations, analgesics/Chinese medicines or proprietary Chinese medicines, etc. Pregnancy status or breastfeeding Any disease or symptom that may affect the implementation of the study or the interpretation of the results Participate in other clinical trials at the same time