A kind of typical optical materials is developed by doubly rare-earth doped strontium sulfides, which has excellent erasable and rewrit able optical-storage function.Strontium sulfides activated by both Eu, Sin and Ce, Sm are repoted in this paper.Spectral properties and optical storege machanism are investigated. Information can be write by ultraviolet light or blue-green light and can be read by infrared light. The reading signals are green or orange luminescence. These materials have very fast response rate, high storage density and have not thermal effect.