Background Introduction In recent years, epidemic diseases have continued to threaten people\’s health, the most serious of which is meningococcal meningitis. Because this disease is very harmful, it not only threatens people\’s lives, but also causes many sequelae. Therefore, in order to protect the health of ourselves and our families, we should fight on the front line of vaccination, which is also one of the important details to protect our own health. What does the meningococcal vaccine do? Can the meningococcal vaccine help us prevent and treat it?