About mother-to-child blocking has been a controversial topic, hepatitis B virus infection to the next generation of the transmission of the following three main aspects: 1, intrauterine (5% or less during pregnancy) 5-10% during labor and delivery, postpartum care. After delivery, the application of hepatitis B immunoglobulin and hepatitis B vaccine combined immunization for infants can block 96% . Whether or not to take hepatitis B antivirals during pregnancy and whether or not to breastfeed after delivery have been debated events. For patients who have been diagnosed with hepatitis B prior to pregnancy, the administration of antiviral therapy has largely met with consensus. Controversy 1. Whether or not to apply antiviral to hepatitis B virus carriers during pregnancy or in the second trimester of pregnancy is the most controversial. The supportive side believes that taking antiviral medication can reduce the viral index and improve the rate of mother-to-child interruption. The opposing side thinks that the routine immunoblocking rate is 96%, and it is not necessary to take antiviral drugs for the sake of 4%, because, firstly, if taking antiviral drugs in the immune tolerance period, the virus generally does not decrease highly, and it is easy for drug resistance to occur. Secondly, 80% of the patients will be activated by the virus when they stop taking the drug after delivery, which will induce hepatitis B patients and even liver failure (of course, the percentage is not high). 2, is the issue of breast milk, the support side for human infants applying standardized postnatal immunoblocking measures, can safely receive breastfeeding. The opposing side thinks that, firstly, if the mother is taking antiviral drugs, it will indirectly and passively cause the baby to be taking antiviral treatment. Secondly, in the case of Hepatitis B carriers, it is believed that breastfeeding is tantamount to exposing the infant to the risk of contracting the Hepatitis B virus. This is at a time when the infants receiving immune blockade have immature anti-hepatitis B virus mechanisms of their own. I am strongly against breastfeeding. I am not against taking antiviral drugs during pregnancy when hepatitis B is active, and I am against taking antiviral drugs when one is a carrier of the hepatitis B virus.