Newborns born to hepatitis B surface antigen-positive mothers will receive free hepatitis B vaccine and immunoglobulin immediately after birth. For newborns born to hepatitis B surface antigen-positive mothers, the birthing hospital will provide them with free hepatitis B vaccine and immunoglobulin immediately after birth. The specific methods are: 100-200 IU of hepatitis B immunoglobulin in the thigh muscle, intra-muscular injection of hepatitis B vaccine in the deltoid muscle of the right upper arm, followed by another injection of hepatitis B vaccine at 1 and 6 months; at the same time, intra-dermal injection of BCG in the middle of the deltoid muscle of the left upper arm slightly below. It is recommended that infants born to surface antigen-positive mothers have their blood tested for hepatitis B two-to-one half 1 to 2 months after completing the 3 doses of hepatitis B vaccine, and if no protective antibodies are produced, then the 3 doses of hepatitis B vaccine should be given free of charge according to the 0, 1, and 6 month procedures. Studies have shown that the effectiveness of mother-to-child interruption with recombinant hepatitis B vaccine plus hepatitis B immunoglobulin can be over 90%.