A biometrics authentication system capable of easily performing biometrics authentication is provided. A biometrics authentication system includes: a microlens array section including a plurality of microlenses; an image pickup device for receiving light condensed by each microlens in the microlens array section from each different part of a living organism to obtain image pickup data of each part; an image processing section for producing a single image pickup data of the living organism on the basis of the image pickup data of each part captured by the image pickup device; and an authentication section for performing at least vein authentication using a vein of the living organism on the basis of the single image pickup data captured by the image processing section.