Slromw al pneuntonw is the second most coomon cause of meningitis in infancy and a major respiratory pathogen. It is the one of the most common cause of acquired pneumonia and otitis media in childhood. Intracranial. extesion of acute otitis media occur somewhat more often from .-)oorly pneumatized than from well-pneumatized temporal bones and in ears with a history of previous attacks of otitis media. We experienced a case of pneumococcal meningitis with 3 time recurrences in a 6 year-old male patient who had hospitalized with high fever, headache, vomiting and stupor mental state. He was diagnosed as CSF study and brain CT. Brain CT showed poorly pneumatized right mastoid region of temporal bone at that time. We report a case of pneumococcal meningitis with- 3 time recurrences due to poorly pnematized mastoid region of temporal bone. A review of literatures was also presented briefly.