A pregnant woman with Hepatitis B may transmit the virus to her child if she gives birth to a baby. Minor triple positive is a contagious disease, if the mother-child blocking is not carried out during pregnancy, it may lead to the transmission of the virus to the child, generally hepatitis B virus can be vertically transmitted, and the incidence rate is relatively high. If you have already had a small triple positive, you need to do a good job of mother-to-child blocking after pregnancy, and carry out regular blocking treatment, which can reduce the chances of the next generation being infected with small triple positive. If you are suffering from S3, it is better not to rush to get pregnant and give birth, you need to get medical checkups and treatment first before preparing for pregnancy. And before and after the pregnancy need to carry out all kinds of tests, if the hepatitis B virus DNA quantitatively higher, after birth need to timely injection of hepatitis B vaccine and hepatitis B immune globulin, and so on.