During pregnancy, if the pregnant woman is infected with the rubella virus, the impact on the pregnant woman herself is not significant; however, it primarily causes severe effects on the fetus. The main impact on the fetus is congenital damage, primarily involving congenital developmental abnormalities, with the early stages of pregnancy being the most critical. This period is a crucial phase of fetal development. If infected with the rubella virus, the risk coefficient can be as high as 80%. After intrauterine infection of the fetus, some patients may develop congenital rubella syndrome, primarily involving cardiac defects, cataracts, deafness, and even delayed brain damage after the baby is born.