1. All kinds of ectopic pregnancy, tubal sterilization;
2. Infertility, uterine perforation and sterilization outside the ring.
3. Ovarian cyst, tumor, ovarian corpus luteum rupture, polycystic ovary syndrome;
4. Uterine fibroids, uterine prolapse, dysfunctional uterine bleeding;
5. Endometriosis, adenomyosis, ovarian chocolate cyst;
6. Pelvic inflammatory disease and pelvic abscess;
7. Preoperative diagnosis of chronic pelvic pain of unknown etiology, unidentified tumor, ovarian biopsy, etc.