Intrauterine infections have a great impact on the fetus, and there are several types of intrauterine infections, such as viruses, bacteria, toxoplasmosis, syphilis, hepatitis B and so on, all of which can cause intrauterine infections. If intrauterine infection is detected at an early stage, it can cause fetal malformation, even miscarriage, stillbirth or stillbirth, so obstetricians pay great attention to intrauterine infections and will conduct early screening. If a bacterial infection is detected at an early stage, the obstetrician will promptly administer antibiotics for preventive treatment. For preterm infants, glucocorticosteroids are administered early to promote lung maturation. For newborns after birth, doctors will intervene in a timely manner to screen and provide early antibiotic treatment for newborns suspected of having intrauterine fetal infections.