There are many factors that influence whether an infertility patient can finally achieve pregnancy during assisted reproductive technology treatment, such as age, endocrine level, embryo quality, uterine rapture and telephone call edge caries, cricket, cystic sacs, and the ability to know what to do with the pregnancy – during the embryo transfer (IVF-ET) cycle, most patients can obtain transferable embryos of good quality, but the pregnancy rate is not satisfactory, and uterine cavity abnormalities can Uterine cavity abnormalities can interfere with embryo implantation and pregnancy continuation, resulting in infertility and miscarriage. In layman’s terms, pregnancy requires not only a good “seed” (embryo) but also a good “soil” (endometrial environment), and what hysteroscopy does is to improve the “soil” environment and enhance the endometrial environment. The work of hysteroscopy is to improve the “soil” environment and to improve the endometrial tolerance of the embryo. It has been reported in the literature that the rate of uterine cavity abnormalities in infertile women is as high as 74.2%. These abnormalities include uterine adhesions, endometrial polyps, submucosal fibroids, uterine malformations, and endometritis. How can these abnormalities be detected? Both hysterosalpingography (HSG) and pelvic ultrasound are included in the routine tests for female infertility, both of which are helpful in the diagnosis of occupying lesions in the uterine cavity and uterine malformations, but both are indirect and both have the drawback of their high ratio of false positives to false negatives. With the increasing development of hysteroscopic instruments and techniques, hysteroscopy is increasingly used in clinical practice as a minimally invasive treatment, especially in the examination and treatment of female infertility, and has become the current gold standard for diagnosing uterine cavity diseases. During hysteroscopy, lesions can be removed or targeted under direct vision, which can significantly improve the morphology of the uterine cavity and endometrial function and provide good conditions for conception, thus increasing the pregnancy rate; while for those with normal uterine cavity examination, there may be other potential factors affecting embryo implantation, which require further search for the cause and active intervention. Meanwhile, some foreign studies have pointed out that during the process of hysteroscopy, the endometrium is flushed by the dilating fluid and the cavity is uniformly and mechanically dilated, which may cause short-term changes in the expression of certain genes in the endometrium and promote the release of growth factors and cytokines that are favorable to embryo implantation, thus facilitating embryo implantation and increasing the pregnancy rate. Further studies have also shown that patients with hysteroscopic findings of cavity abnormalities and appropriate treatment have significantly higher clinical pregnancy rates. This shows that hysteroscopy has received significant clinical attention and occupies an important place in assisted reproductive technology. In view of the importance of hysteroscopy described above, it is recommended that hysteroscopy should be included as a routine treatment for infertility, pre IVF and especially for patients with multiple IVF failures in hospitals where available.