Intrauterine infections in newborns are usually difficult to cure completely because they are caused by infection in the mother’s womb and are mostly detected after birth because the symptoms of early intrauterine infections are not obvious. At this time, there is often irreversible damage, such as pathological jaundice and hepatosplenomegaly, and in some cases, microcephaly and severe mental retardation, which are difficult to correct completely. In particular, the mental retardation and microcephaly are basically fixed and difficult to be completely reversed. It is only after intrauterine infection is detected that anti-infection treatment can be administered in time to avoid further damage, and in the case of intrauterine infection caused by cytomegalovirus infection, ganciclovir treatment can be applied.