A scintillator deposition apparatus according to an embodiment of the present invention comprises: a vacuum chamber in which the inputting, conveying, and discharging of a substrate are performed; a transfer module which is positioned in the vacuum chamber and horizontally conveys the substrate; a plurality of deposition device units having deposition chambers in which scintillator materials are deposited on the substrate, the deposition device units being disposed spaced apart from each other in the circumferential direction with respect to the transfer module; a load lock device unit for inputting the substrate into the vacuum chamber; and an unload lock device unit for discharging the substrate, on which the deposition has been completed in the deposition device units, to the outside of the vacuum chamber. The substrate can be horizontally input to the deposition chambers or horizontally discharged from the deposition chambers by the transfer module.