According to China’s immunization program, 1.5 year old children need to be vaccinated with DPT vaccine, MMR vaccine and Hepatitis A vaccine. 1. DPT vaccine: at the age of 1.5 years, the fourth dose of DPT vaccine should be given to improve the immunity against pertussis, diphtheria and tetanus. 2. MMR vaccine: 1.5 years old should receive the first dose of MMR vaccine. It can prevent measles, mumps and rubella. 3. Hepatitis A Vaccine: Hepatitis A vaccine should be given at 1.5 years old. You can choose live attenuated hepatitis A vaccine or inactivated hepatitis A vaccine. Hepatitis A inactivated vaccine is a two-shot vaccination program. It can mainly improve the body’s immunity to the hepatitis A virus and prevent the occurrence of hepatitis A. The specific vaccination should be given in each region. Specific vaccinations may vary from region to region, so it is recommended to consult your doctor in time.