Babies receive two types of vaccinations after birth: one is BCG vaccine; the other is Hepatitis B vaccine. The BCG vaccination is mainly for the prevention of tuberculosis, which is not very prevalent in China, but timely and effective BCG vaccination after birth can effectively help children avoid getting tuberculosis. For hepatitis B vaccine, there are relatively more infected people with hepatitis B in China, so it is important to receive hepatitis B vaccine on time after birth according to the procedures of 0, 1 and 6 to produce hepatitis B antibodies as soon as possible in order to have resistance to hepatitis B.