1. Dysmenorrhea and chronic pelvic pain: The most typical symptom of endometriosis is secondary dysmenorrhea, which is progressively aggravated. The pain starts 1-2 days before menstruation and disappears after menstruation. It spreads to the lower abdomen and lumbosacral area. 2. Pain during sexual intercourse: abdominal pain occurs during sexual intercourse. 3. Infertility: 50% of patients with endometriosis are combined with infertility due to extensive adhesions between fallopian tubes and ovaries and ovulatory dysfunction. 4. Menstrual abnormalities: increased menstrual flow, prolonged menstrual cycle, and dripping. 5. Acute abdomen: once the ovarian chocolate cyst ruptures, sudden onset of lower abdominal pain, accompanied by nausea, vomiting and lower abdominal cramps may occur. 6, other parts of the endometriosis manifestations: such as: bladder endometriosis appears periodic urinary frequency and pain, hematuria, etc.