The Author analyze incidence, localizations and the great variety of hystopathological specimen of brain tumors in infancy and childhood. Clinical and surgical problems expecially derive from growth and development of infant. Medulloblastoma is the most common tumor of posterior fossa. Between supratentorial tumors gliomas and intraventricular neoplasms are the most commonly found at the operation; more rare tumors of the skull and cranial basis. The importance of pre-operative ventricular shunt in case of posterior fossa tumors and the cases of high- dimensioned supratentorial tumors with little symptoms are discussed.