PROBLEM TO BE SOLVED: To provide an organism determination device capable of accurately determine an impersonation without depending on the image quality of a picked up image.SOLUTION: An organism determination device 1 includes: a feature amount comparison part 14 that acquires a first image (visible light image) which is picked up by irradiating a subject with light in a first wavelength region and a second image (IR image) which is picked up by irradiating a subject with light in a second wavelength region by using imaging units 3 (first camera 31 and second camera 32 respectively), and determines whether the subject is an organism based on the amount of characteristics obtained from the first image and the amount of characteristics obtained from the second image.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】撮像された画像の画質によらず、なりすましを精度よく判断する。【解決手段】生体判定装置1は、被写体に第1波長域の光を照射して撮像した第1画像(可視光画像)と、前記被写体に第2波長域の光を照射して撮像した第2画像(IR画像)とを撮像部3(第1カメラ31及び第2カメラ32それぞれ)によって取得して、第1画像から得た特徴量と、第2画像から得た特徴量とに基づいて、被写体が生体か否かを判定する特徴量比較部14を備える。【選択図】図1