Whether or not minor triple positive can be transmitted to the baby mainly depends on the level of hepatitis B virus. At present, through the observation of a large number of clinical cases, it is found that when the hepatitis B virus level is higher, the chance of transmission to the child is higher. If the Hepatitis B viral load is greater than 10^5IU/mL, the virus may be transmitted to the child through the placenta. When the viral DNA is less than 10^5 IU/mL, this intrauterine infectivity is minimal. With the added dual protection of hepatitis B vaccine and hepatitis B immune globulin at birth, the baby is essentially protected from hepatitis B infection. For pregnant women with hepatitis B virus greater than 10^5IU/mL, it is recommended that oral hepatitis B antiviral medication be started in the 24th week of pregnancy, and that the child be given the hepatitis B vaccine plus hepatitis B immune globulin blockade after birth, so that the child’s infectivity will be drastically reduced.