The present disclosure provides a gaze tracker and a gaze tracking method. The gaze tracker includes: an image acquirer to acquire eye images of a user using two or more cameras and two or more lightings and a gaze calculator which detects a lighting reflection point from each eye image to extract a cornea central point, detects a pupil central point from each eye image, and calculates a gaze vector. In particular, when lighting reflection points are detected from each eye image, the gaze calculator calculates vectors for connection between each lighting and a corresponding lighting reflection point and detects an intersection point between the calculated vectors. When only one lighting reflection point is detected, the gaze calculator extracts the cornea central point using distance information between a pre-stored lighting reflection point and the cornea central point and the one lighting reflection point.
