1. A system for iris recognition using stereoscopic face recognition, comprising: two or more face recognition cameras for photographing two or more face images of an authenticatee; a recognition system for receiving the face images photographed by the face recognition cameras from the face recognition cameras and creating stereoscopic face information on the basis of the face images, the information including detected location information of pupils of the authenticatee by extracting parts of the face from the face images, and a detected distance information between the pupils and the face recognition cameras calculated by (i) obtaining a distance (dθ) between the two images on an image plane formed by the two face recognition cameras in a point (B) of an objective plane; (ii) obtaining a distance (l) between the objective plane and the face recognition cameras by dividing, a value obtained by multiplying a distance (b) between the two face recognition cameras by a focal distance of the stereo cameras, by the distance (dθ) between the two images on the image plane formed by the two face recognition cameras in the point (B) of the objective plane; and (iii) moving the face recognition cameras by a distance obtained by subtracting the focal distance (f) of the two face recognition cameras from the distance (l) between the objective plane and the face recognition cameras in order to obtain a clear image; and two or more iris recognition cameras controlled by the recognition system to photograph irises of the authenticatee using the created stereoscopic face information after adjusting a focal distance of the two or more iris recognition cameras based on the detected location and distance information.