Bacterial vaginitis may affect IVF, leading to poor development or even causing miscarriage to occur. The presence of bacterial vaginitis in a woman can increase vaginal discharge, and bacterial infections in the reproductive area may affect the quality of the embryo, leading to congenital malformations in the fetus. Moreover, bacterial vaginitis may cause retrograde infection leading to inflammation in the uterine cavity, and the presence of inflammation in the uterine cavity may lead to the occurrence of miscarriage. Before a woman undergoes IVF, she should first undergo a comprehensive systematic examination. If bacterial vaginitis is detected it should be treated and cured before undergoing IVF, which will have a positive effect on the development of the fetus. If a woman discovers the presence of bacterial vaginitis after undergoing IVF pregnancy, she should undergo regular checkups and treatments, and seek medical attention in case of any uncomfortable symptoms such as abdominal pain or vaginal bleeding.