Spine　morphological　analysis　plays　an　important　role　in　various　medical　purposes.　However,　the　most　conventional　methods　for　the　task　employing　radiography　techniques　cause　considerable　radiation　damage　to　the　patient　and　costs　such　high　expense,　which　is　not　suitable　for　frequent　examinations　and　treatments　for　certain　groups　of　patient.　Depending　on　the　subjective　analysis　is　also　an　obvious　shortcoming　of　the　methods.　In　this　paper,　we　developed　an　innocuous　spine　morphological　analysis　method　based　on　the　surface　asymmetry　information　of　the　patient＇s　back,　which　causes　no　damage　to　the　patient　and　provides　a　satisfying　efficiency　and　low　cost.