To provide a method for manufacturing a radiation image conversion panel which is free from the unevenness of luminance and shows high luminance and high sharpness, and also to provide a radiation image conversion panel.

The radiation image conversion panel is characterized in that the luminous intensity ratio at the peak of a luminescence wavelength of 440 nm in an ultraviolet-ray excitation wavelength of 274 nm of stimulable phosphors in a stimulable phosphor layer before heating at least one stimulable phosphor layer at 400°C, to that after heating it at the same temperature is within ±10% .