The 13-valent pneumonia vaccine must be given in four full doses. The 13-valent Pneumonia Vaccine belongs to Class II vaccine, which is mainly used to prevent pneumonia caused by 13 serotypes of pneumococcal infections. The standard vaccination procedure for 13-valent pneumonia vaccine in China is three shots for basic immunization and one shot for booster immunization, and a total of four shots are needed to complete the vaccination. After the four shots, the vaccine will produce long-lasting immunity, and there is no need to revaccinate, and the protection of the child will be more comprehensive. If the 13-valent pneumonia vaccine is given only one dose or one dose is missed, the overall antibody potency of the vaccine will be unsatisfactory, which will have a certain impact on the child’s health and reduce the protection for the child. Vaccination should listen to the doctor’s instructions and recommendations, in accordance with the national standard vaccination procedures, and should not be blindly vaccinated to avoid adverse consequences.