I. What is uterine adhesion? Why do I have uterine adhesions? Uterine adhesions refer to the adhesion of the myometrium and/or cervical canal to each other after damage to the uterine cavity or the basal lining of the cervical canal due to various factors (uterine operations, infections, radiation, etc.); due to the lack of knowledge about contraception in China, many women of childbearing age have undergone multiple abortions or other causes of uterine operations, and uterine adhesions have become a common gynecological disease affecting fertility and menstruation. How to determine the presence of cervical adhesions? The diagnosis of hysterocutaneous adhesions is currently made by transvaginal gynecological ultrasound, hysterosalpingography and hysteroscopy, of which hysteroscopy is the gold standard for the diagnosis of hysterocutaneous adhesions and, in some cases, an effective way to treat them; the classification of hysterocutaneous adhesions is still based on the 1988 American Fertility Society standards, which are based on the extent of adhesions, the type of adhesions and menstrual status, with a score of 0-4 The score of 0-4 is type I (mild), 5-8 is type II (5 moderate), and 9-12 is type III (severe); as follows: III. The basic principles of hysteroscopic surgery are: rectification of uterine cavity morphology, restoration of normal anatomy, separation of adherent tissues and protection of residual endometrium. Hysteroscopy is an important tool for the decomposition of hysterosal adhesions, and postoperative re-adhesions after hysterosal adhesions are also a key factor in determining the success of surgery. In addition, some patients with moderate to severe adhesions may have a higher chance of complications such as water intoxication due to the long operation time. In addition, attention should be paid to the occurrence of complications such as uterine perforation during surgery, and for some patients with high risk of preoperative evaluation, laparoscopic assistance or surveillance under ultrasound can be considered to improve the safety of surgery.