The 1st ultrasound for women after a successful IVF transfer is usually done about 20 days after the transfer. The purpose of the examination is mainly to see if the development of the gestational sac in the uterine cavity is full and if there is the presence of fetal buds to determine the growth and development of the early embryo in the uterine cavity and to project the gestational week. After a successful IVF transfer, a woman needs not only to have a gynecological ultrasound to determine, but also to pay attention to the measurement of chorionic gonadotropin and progesterone levels. After the IVF transfer, progesterone drugs should be routinely given to keep the fetus alive until the third trimester. The effect of progesterone relaxes the uterine muscles to reduce the rejection reaction and facilitate the embryo’s implantation and growth. In addition, women should also pay attention to proper rest after the transfer, keep their mood relaxed and regular life, and increase nutrition appropriately, which is also beneficial to the early embryo development.