1, pregnant mothers should not be nervous, because pregnant mothers are too nervous may cause adverse effects on the baby. Therefore, pregnant mothers should pay attention to the matter of having hepatitis B, but do not be too nervous. 2, to confirm their own hepatitis B virus DNA levels and the status of the major and minor triplets. In China, the vast majority of hepatitis B patients are transmitted by their mothers, and the risk of hepatitis B virus transmission is closely related to the level of hepatitis B virus DNA and the status of major and minor triplets. If no protective measures are taken, more than 70% of babies of “major triple-positive” mothers will be infected, 10% of babies of “minor triple-positive” mothers will be infected, and mothers with HBV DNA > 1.0 x 108 copies/mL are the most infectious, with 90% of babies being infected! More than 90% of babies will be infected! For pregnant women who are assessed to be at high risk of transmitting hepatitis B, it is recommended that they be given the appropriate medication at week 32 to reduce the risk of transmission. Therefore, the first thing a pregnant woman who finds out she has hepatitis B should do is to come to the Infectious Diseases Unit for a test to clarify her hepatitis B virus DNA level and her major and minor triplet status so that she can understand her risk of transmitting hepatitis B to her baby. 3. Have regular liver function tests during pregnancy to know the hepatitis activity. Hepatitis B may increase the risk of adverse events in pregnancy, and pregnancy may also cause or exacerbate hepatitis activity. It is important to determine the specific treatment plan according to the clinical situation. In general, if the disease is stable and liver function is normal, it is recommended to consider whether to treat hepatitis B after delivery. However, if the risk is assessed to be high due to recurrent liver function abnormalities during pregnancy, then treatment of hepatitis B during pregnancy needs to be fully considered. We recommend that pregnant women with hepatitis B have their liver function checked regularly, and if the results are normal, the liver function can be rechecked every 3 months. If the liver function is abnormal, it is recommended to closely test the liver function to understand the fluctuation of transaminases. 4. As the placenta ages during late pregnancy, the possibility of hepatitis B virus entering the fetus gradually increases, so special attention should be paid to avoid strenuous exercise, as these conditions may lead to slight abruption of the placenta, thus increasing the risk of intrauterine transmission of hepatitis B. Therefore, for pregnant women with hepatitis B, they should take special care of themselves during the late pregnancy and should not exercise strenuously. 5. Immediately after the birth of the fetus, hepatitis B vaccine and hepatitis B immunoglobulin should be administered, and hepatitis B vaccine should be administered according to the standard vaccination order of hepatitis B vaccine. By this method, more than 90% of children can be protected. Therefore, pregnant women with hepatitis B should be examined to understand the risk of transmitting hepatitis B and whether their liver function is suitable for pregnancy, and be actively given treatment after birth to reduce the risk of infecting children.