1.What is hysteroscopy? Hysteroscopy is a fiber-optic endoscope, which can be used for the diagnosis of the causes of infertility, the diagnosis, treatment and follow-up of lesions in the uterine cavity. Hysteroscopy can not only determine the site, size, appearance and scope of lesions, but also make detailed observation of the tissue structure on the surface of lesions, and remove the lesions by taking material or positioning scraping under direct vision, which greatly improves the accuracy of the diagnosis of diseases in the uterine cavity, and renews, develops and makes up for the deficiencies of the traditional diagnostic and therapeutic methods. 2.Types of diseases treated by hysteroscopy Infertility examination, abnormal vaginal bleeding, uterine submucosal fibroids, endometrial polyps, pre-transplantation evaluation of IVF, recurrent spontaneous abortion, IUD and post-abortion embryonic tissue residue, uterine abnormality correction and so on. 3.If you have the following conditions, you can be treated by hysteroscopy: (1) Abnormal uterine bleeding: excessive menstruation, frequent menstruation, prolonged menstruation, irregular uterine bleeding, etc.; (2) Infertility and recurrent spontaneous abortions: probing for tiny lesions in the uterine cavity and correction; (3) Proximal obstruction of fallopian tubes: hysteroscopic tubal insertion; (4) Submucous uterine fibroids, endometrial polyps; (5) Diagnosis and treatment of uterine adhesion; (6) Pre-transplant evaluation of IVF: evaluation of endometrium before transplantation to improve the chances of conception; (7) Localization of intrauterine device and intrauterine foreign body; (8) Diagnosis of early endometrial cancer, uterine cervical cancer and its pre-cancerous lesions, application of hysteroscopy and localization of biopsy combined with histopathology. 4.If you have the following conditions, you can’t or temporarily can’t do hysteroscopy: (1) active uterine bleeding (small amount of bleeding or special indications are exceptions) (2) acute or subacute reproductive tract infections (3) recent history of uterine perforation or uterine surgery (within 3 months) (4) early pregnancy hoping to continue pregnancy. (5) Malignant tumors of the cervix. (6) Tuberculosis of the reproductive tract without appropriate anti-tuberculosis treatment. (7) Excessive narrowness of the uterine cavity or cervix that is too narrow or too rigid. (8)Those with severe heart, lung, liver, kidney and other organ disorders, metabolic acidosis and other difficulties in enduring the operation. (9) Those whose oral body temperature is measured not less than 37.5℃ before surgery. (10) Blood diseases without follow-up treatment measures, etc. Combined uterine and laparoscopic surgery plays an important role in the diagnosis and treatment of female infertility, and has a positive effect on improving the female reproductive environment and increasing the tolerance of the uterus to embryos.