Objectives: promoting maximum strengths of the Stereotactic biopsy for the brain tumors. Method: research funds, description, carried out on 37 cases of Neurosurgical department, ChoRay hospital, in 2004 and two months (Jully and August) in 2005.Results - Discussion: 37 patients in the study sample, including 26 men (70.3%), 11 women (29.7%).