Generally speaking, the success rate of IVF with 7.5mm endometrium is not certain, the specific situation is related to the quality of embryos, the morphology of endometrium and the woman’s own physical condition and other factors. The thickness of the endometrium can to a certain extent reflect the functional status and tolerance of the endometrium, so there is a certain relationship between the success rate of IVF and the thickness of the endometrium. Generally speaking, the thickness of the endometrium is about 8-12mm, which is more suitable for IVF embryo transfer and has a higher success rate. According to this standard, if the thickness of the endometrium for IVF transfer is 7.5mm, the endometrium is slightly thinner, and the success rate may decrease, but the specific situation should be combined with the quality of the embryo, the morphology of the endometrium, as well as the woman’s own physical condition and other factors to make a comprehensive judgment, there is no clear value. Before the formal IVF transplantation, women can first adjust for a period of time, pay attention to diet, timely supplementation of nutrients, so as to better promote the growth of the endometrium, and improve the success rate of the transplantation.