Indications for IVF: 1. Gamete transport disorders caused by various factors in the female; 2. Ovulation disorders; 3. Endometriosis; 4. Low or weak spermatozoa in the male; 5. Unexplained infertility; 6. Immune infertility. Contraindications to IVF: In vitro fertilization-embryo transfer cannot be performed if one of the following conditions is present Serious mental illness, acute infection of the genitourinary system, sexually transmitted diseases in either the male or female partner Genetic diseases that are not suitable for childbirth as stipulated in the Maternal and Infant Health Care Law and cannot be genetically diagnosed before embryo transfer Radiation, toxic substances, drugs and in the period of action The female partner’s uterus does not have the function of pregnancy or serious physical disease cannot bear pregnancy.