An apparatus for enhancing a stereoscopic image may include: a color relationship extraction unit, which extracts color relationships between a plurality of first coordinates in a 3-dimensional color space for a first image and second coordinates in a 3-dimensional color space for a second image corresponding to the plurality of first coordinates; a color relationship correction unit, which corrects a color relationship for any one first coordinate from among the plurality of first coordinates based on a color relationship of at least one first coordinate existing within a particular distance from the any one first coordinate; and a color value transformation unit, which transforms a color value of the first image by using the corrected color relationship of the any one first coordinate. The invention provides the advantage of accurately correcting color imbalance between the left image and right image forming a stereoscopic image.