A radiation image detection apparatus comprising a scintillator, which is configured to include columnar crystals and converts radiation into light when the radiation is irradiated thereon, and an optical detector, which converts the light, emitted from the scintillator into an electrical signal, the scintillator and the optical detector being arranged on a support such that the radiation is incident on the optical detector and the scintillator in this order, wherein a columnar crystal area is present at a radiation-incident side of the scintillator, and a non-columnar crystal area is present at a side of the scintillator opposite to the radiation-incident side; and a method for manufacturing the radiation image detection apparatus are provided.