Babies at three months old can be vaccinated with a variety of vaccines, such as DPT vaccine, pneumonia vaccine, influenza vaccine, rotavirus vaccine and so on. DPT vaccine: you can get the first dose of DPT vaccine, which is a free vaccine and is used to prevent three diseases: diphtheria, tetanus and whooping cough. Pneumonia vaccine: the first dose of 13-valent pneumonia vaccine, which is mainly used to prevent various infectious diseases caused by Streptococcus pneumoniae infection. Influenza vaccine: vaccination against Haemophilus influenzae, which is used to prevent infectious diseases associated with Haemophilus influenzae infection. Rotavirus vaccine: Rotavirus vaccine can be given to prevent gastrointestinal diseases caused by rotavirus infection. In addition, if the BCG, Hepatitis B and Polio vaccines are too late to be administered at one month or two months of age, they can be made up at three months of age. For details, you should go to the vaccination center.