In vitro fertilization and embryo transfer (IVF-ET) is often called “in vitro fertilization” in our country. In fact, in vitro fertilization is a special technique in which both eggs and sperm are taken outside the body and allowed to complete the fertilization process in an artificially controlled environment outside the body, and then the early embryos are transferred to the woman’s uterus where they are conceived as a child. Babies produced using in vitro fertilization techniques are called IVF, and these children also grow up in the mother’s womb. You could say that the “IVF technique” is equivalent to “in vitro fertilization”. What is the IVF procedure? First of all, we will visit the specialist clinic and determine the indications for IVF after the systematic examination related to infertility. Second, prepare three documents: ID card of the couple, marriage certificate of the couple, childless certificate or birth certificate (birth certificate is required for those who have children and want to have more children). 3. Systematic medical examination for both spouses 1. Female: gynecological examination, gynecological ultrasound, endocrine examination, blood routine, urine routine, blood sedimentation, coagulation function, hospital immunity, liver and kidney function, chest X-ray, electrocardiogram, TCT, mycoplasma, chlamydia, blood type, etc. 2.Male: male examination, inpatient immunity, liver function, kidney function, blood type, urethral discharge gonococcus, mycoplasma, chlamydia, chromosome examination, etc. 4. Determine the ovulation promotion program according to age, basal hormone condition, basal follicle count, body weight, previous ovulation promotion history, etc. Those with normal ovarian function usually adopt a long program of ovulation promotion, that is, start to use the medication for descending regulation about 7 days before menstruation. After 14-21 days of down regulation, ovulation promotion will be started and ultrasound monitoring will be performed to adjust the dosage according to the follicle growth rate and hormonal changes. VI. The sperm-egg union forms a fertilized egg, which is usually cultured in vitro for three days to form a 6-8 cell embryo, and the embryo is transferred on the third morning after egg retrieval. Depending on the age of the patient and the cycle of IVF treatment, 2-3 embryos are selected for transfer to the woman’s uterus, and if there are any remaining embryos, they are frozen and preserved. VII. After embryo transfer, luteal support will be performed, and progesterone will be given orally or vaginally depending on the patient’s condition, and pregnancy will be confirmed by urine HCG or blood HCG test in about 14 days. After pregnancy is confirmed, ultrasound examination will be performed 30 days after transfer to determine the number of gestational sacs and the presence of fetal heartbeat, and reduction of fetus will be required if multiple or more than 3 pregnancies are found.