Traffic　information　collection　technology　is　the　basis　to　constructing　the　ITS　common　information　platform,　in　which　the　most　critical　and　complex　part　is　the　automatic　detection　technology　to　vehicles.　In　this　paper,　we　focus　on　the　mathematics　morphology　technology＇s　application　in　vehicles　images　processing.　Through　reading　a　large　number　of　documents,　we　can　conclude　that　the　image＇s　geometric　features　usually　can＇t　be　affected　by　external　environment　and　learn　that　mathematical　morphology　in　processing　vehicles　images　under　complex　environment　has　obvious　advantages.　Through　studying　Vehicle　identification　based　on　morphology,　the　main　contents　are　as　follow:　Noise　filtering,　adhesion　target　segmentation,　image　reconstruction,　image　matching,　and　other　key　technologies.　In　this　paper,　the　image　morphology　in　vehicle　detection　of　specific　applications　was　reviewed.　©　2011　IEEE.