Why is the abortion rate of IVF so high? IVF has become one of the hopes of infertile couples. However, fetal abortion also occurs from time to time. Why is the abortion rate of IVF so high? It will be discussed in detail below from four aspects: embryonic development process, viral infection, genetic factors and maternal age. Embryonic development process Embryonic development is one of the main reasons for fetal arrest in IVF. Because in the early stages of embryonic development, the embryo needs to divide from single cells to multi-cells, and then differentiate into organs such as heart, liver, kidneys, etc. And after this