RESUMEN
Mother-to-child transmission of hepatitis B virus (HBV) is one of the main ways of transmission and the main cause of chronic hepatitis B after infection. Therefore, preventing mother-to-child transmission of HBV is particularly important in reducing the incidence of chronic hepatitis B. Currently, nucleoside ( acid) analoids ( Nas ) used for mother-to-child blocking of HBV include lamivudine (LAM) , tibivudine (LdT) and tenofovir fumarate ( TDF). Propofol tenofovir fumarate (TAF) has also been used in pregnant chronic hepatitis B pa- tients. This paper summarizes the efficacy, safety and antiviral treatment indications and termination time of the above-mentioned drugs in mother-to-child preventing to provide suggestions for the selection and rational application of mother-to-child preventing Nas.