The Group A meningitis vaccine is generally recommended to be given as a basic immunization with one dose at 6 months of age, one dose at 9 months of age, and no later than 24 months of age, with booster shots completed at 3 and 6 years of age when necessary. Epidemic cerebrospinal meningitis (ECM), there are 13 serotypes, of which the most predominantly aggressive infections are caused by types A, B, C, Y, W135, and X. It is transmitted through the respiratory tract, and the main symptoms are sudden onset of fever, headache, arthralgia, and vomiting. Group A meningitis vaccine, which prevents epidemic cerebrospinal meningitis caused by group A meningococcus. The routine vaccination program of Group A Meningococcal Polysaccharide Vaccine is 2 doses of basic vaccination, 1 dose at 6 months of age and 1 dose at 9 months of age, and the latest children <24 months of age can make up all the doses of Group A Meningococcal Polysaccharide Vaccine, children ≥24 months of age are recommended to choose Group A C Meningococcal Polysaccharide Vaccine, and will not be made up for the vaccination of Group A Meningococcal Polysaccharide Vaccine. Completing the vaccination according to the vaccination program can ensure the protection rate and protection effect of the vaccine, and parents are recommended to complete the corresponding vaccination for their children in time.