A descriptive-cross sectional study conducted to identifying of prevalence and predisposition factors of Deaf-Blindness in primary school for blind children. Target population are primary school for blind children of Tehran city. From 381 blind pupils, 60 predisposed to deafness and 14 were developed with hearing loss. The prevalence of deaf predisposition was estimated 17.3% and the prevalence of Deaf Blindness was estimated 3.7%.