Multi-center Clinical Trials of Sanjie Analgesic Capsule in Treating Endometriosis

Inclusion Criteria: * Subjects have a diagnosis of endometriosis by laparoscopy within 5 years prior to signing ICF, main complain of dysmenorrhea (or menstrual pain or painful periods) and with VAS score of 4 or above; Endometriosis combined with uterine adenomyosis is included. * Female between the ages of 18 and 45 years old; * Regular menstrual period, menstrual cycle falls in the ranging from 28 to 30 days; * No pregnancy planning during taking study medication; use (or have their partner use) an acceptable method of birth control within the projected duration of the study ; * Subjects must sign ICF and agree for follow up. Exclusion Criteria: * Genital cancer or other malignant tumor; * Adnexal masses≥5cm; * Uterine myoma≥3cm; * Suffering from cardiovascular, hepatic, renal or hematopoietic system disease or mental illness; * Receiving hormone therapy within 3 months prior to signing ICF; * Receiving surgical treatment for endometriosis within 3 months prior to signing ICF; * Subjects have a plan of pregnancy, being pregnant, breast-feeding during recent 3 months.