Laparoscopic technology has become a very important tool in the diagnosis and treatment of female infertility. The main advantages are: minimally invasive surgery, rapid and accurate diagnosis, and simultaneous completion of diagnosis and treatment for most of the pelvic diseases detected. However, laparoscopy is after all an invasive procedure, so we emphasize that we should strictly grasp the indications and strictly require standardized operation. Laparoscopic surgery is commonly used for the diagnosis and treatment of the following diseases. 1, tubal obstruction (hydrocele): tubal obstruction is mostly caused by inflammation. The increased incidence of pelvic inflammatory disease leads to an increased incidence of tubal inflammatory obstruction. Laparoscopic technique is very easy to understand the condition of the fallopian tubes and their surroundings and to diagnose tubal obstruction and its causes. Laparoscopic surgery is also performed to loosen adhesions and tubal ostomy (recanalization) for treatment purposes. Laparoscopic tubal lavage is performed to directly observe the degree of tubal patency. Laparoscopic surgery is the best method to solve tubal obstruction (hydrocele) at present. 2.Endometriosis: endometriosis is a common cause of infertility. 50% of primary female infertility is found to have endometriosis, and early laparoscopy is recommended for those with primary infertility for more than 3 years. It can be accurately clinically classified: mild, moderate or severe (or AFS score: divided into stages I, II, III and IV). It is also possible to perform a microscopic procedure for endo removal, chocolate cyst excision, restoration of pelvic anatomy and adhesion release. The severity of endoheterosis is related to the success rate of pregnancy after treatment. Laparoscopic techniques have become the “gold standard” for the diagnosis of endometriosis and are the preferred treatment for endometriosis. 3. Ovarian function: laparoscopy can accurately diagnose ovarian morphology, size and ovulation status. The correct diagnosis can be made by clearly observing the pre-ovulatory follicles, post-ovulatory holes or blood bodies, premenstrual corpus luteum, recent signs of anovulation or typical signs of polycystic ovaries, as well as ovarian dysplasia, premature failure, and oocytes with malformations of both sexes. 4.Ovarian disease: The ovarian disease closely related to female infertility is polycystic ovary syndrome. The pathogenesis is not very clear. Most patients have multiple follicles developing in each menstrual cycle, but none of them can reach maturity and ovulation. This phenomenon is like the ovaries are wearing a strong armor. The typical patient with polycystic ovary syndrome presents with: obesity and weight gain; hirsutism (long, coarse, dark body hair and beard); rough skin (coarse pores on the cheeks); sporadic or amenorrheic menstruation (prolonged cycles of 40 days, 2 months, 4 months, and finally amenorrhea); sex hormone tests: elevated follicle stimulating hormone (FSH), elevated testosterone (T), and prolactin can also be elevated. Ultrasound: bilateral polycystic ovarian changes (several or tens of small follicles), uterine volume can be reduced or small, thinning of the endometrium. Treatment of polycystic ovary syndrome: medication to promote ovulation: short-acting contraceptives (Dain 35, etc.), clomiphene, chorionic gonadotropin (hCG), menopausal human gonadotropin (hMG) Medication for 3-6 months, surgery if not effective. Laparoscopic ovarian perforation, partial corticotomy. The purpose of this surgery is to remove the strong “armor” from the surface of the ovaries to achieve ovulation. 5. Uterine diseases: The morphology of the uterus can be detected at a glance. For example, diagnosis of nulliparous uterus, primordial uterus, infantile uterus, bicornuate uterus, stumpy uterus, uterine fibroids, etc. Surgery: such as myomectomy, hysteroplasty, etc. Laparoscopic myomectomy is the preferred method for patients with uterine fibroids.