The present invention provided a method for diagnosing scoliosis degree using spatial coordinates may include obtaining spatial coordinates corresponding to left, right and center points of shoulders, pelvis and legs of a subject, calculating both height deviations between left and right shoulders and between left and right pelvis, respectively, obtaining a first scoliosis degree by combining the height deviations, calculating a length deviation between the left and right legs, obtaining a second scoliosis degree by the length deviation and, determining a final scoliosis degree by summing the first and second scoliosis degrees.
