Provided is a system for face authentication which can operate separately for individual providers of face authentication service in a stable and efficient manner, which system includes: face authentication machines 1; an administrator terminal 2; a face management server 5 for storing registered users' face image data; and face matching servers 6 each configured to generate face feature amount data of a person to be verified from image data acquired from the camera of a face authentication machine 1, and perform a matching operation by comparing the face feature amount data of the person with that of registered users, wherein, prior to face authentication, data of associations between face authentication machines 1 and face matching servers 6 entered by an administrator is transmitted from the administrator terminal 2 to the face management server 5.