The success rate of IVF twins is about 20-30%, but it varies from person to person due to the quality of the embryos as well as the physical fitness of the women. Clinically, in order to increase the chances of IVF conception, most will put 2-3 embryos into the uterine cavity during IVF. However, the chances of IVF embryo survival are also affected by a number of factors such as the quality of the woman’s eggs, the quality of the embryos, the endometrial tolerance and the woman’s age. If the embryos are of good quality and the woman’s endometrial environment is not abnormal, twins or even triplets may occur. For older women, due to ovarian function decline, the quality of eggs will decline, which affects the quality of embryos; or the poor environment in the uterine cavity may affect the embryo implantation, IVF failure or only one of the embryos survive. Comprehensive analysis of clinical conclusions of many cases of IVF, research shows that the success rate of IVF twins is about 20-30%. Regardless of the success rate of IVF twins, it is recommended to pay attention to rest and reasonable diet after IVF. If ultrasound suggests twins after in vitro fertilization, it is recommended to follow the obstetrician’s instructions to have regular checkups during pregnancy to reduce the complications of miscarriage and preterm delivery that may be caused by twins.