In a radiation image storage panel, as a layer arrangement of consecutive layers, a support, a sublayer and a stimulable phosphor layer having needle-shaped stimulable phosphor crystals is comprised, said sublayer is a binderless non-vapor deposited layer, at least comprising as a halide compound an inorganic alkali halide salt selected from the group consisting of sodium fluoride, sodium chloride, sodium bromide, potassium fluoride, potassium chloride, potassium bromide, rubidium fluoride, rubidium chloride, rubidium bromide, cesium fluoride, cesium chloride and cesium bromide, thereby providing good adhesiveness between phosphor layer and support.