In vitro fertilization-embryo transfer (IVF-ET) is commonly known as “in vitro fertilization”. The process involves the use of drugs to induce ovulation in the woman, the removal of eggs from her ovaries, and the removal of sperm from the man. The eggs and sperm are cultured together in a laboratory, where they become fertilized eggs and develop into embryos, which are then transferred to the uterine cavity. Intracytoplasmic single sperm microinjection (ICSI), the treatment process is the same as IVF-ET but a single sperm is injected into the oocyte plasma by microscopic manipulation. Indications for IVF include bilateral tubal obstruction, endometriosis in the female partner, azoospermia, severe oligozoospermia, and ovulation disorders in the male partner. Most of the drugs used for ovulation promotion in IVF are gonadotropins of very high purity and dose, which are designed to ensure that a certain number of eggs are obtained. Foreign researchers have found that the success rate is proportional to the number of eggs obtained within a certain range. By summarizing the data from our center, we have found that obtaining the right number of eggs results in a success rate of about 50 – 55%. However, obtaining more than a certain number of eggs can bring about complications such as ovarian hyperstimulation syndrome, when all embryos need to be frozen and then transferred three months later. Currently, two embryos can be transferred under the age of 35 and three embryos can be transferred at the age of 35 and above, but the risk of multiple pregnancies is also greatly increased. At this time, there are also many people who are concerned about the health of the baby. It has been reported in the literature that babies born with assisted reproduction techniques are no more likely to have malformations than those born with natural conception.