At　present　coating　materials　are　widely　used　in　the　field　of　aerospace,　machinery,　petroleum,　chemical,　nuclear　power.　The　strength　and　failure　analysis　of　coating　is　more　and　more　important,　at　the　same　time　the　coating　mechanical　properties　are　critical　for　guiding　the　industrial　electroplating.　The　elastic　constant　is　one　of　the　most　important　mechanical　properties　of　parameters　that　are　needed　to　be　evaluated.　The　paper　presents　the　measurement　method　of　elastic　constants　for　coating　material　based　acoustic　microscopy　technology.　The　elastic　constants　of　different　thickness　semi-infinite　nickel　coating　materials　are　test　by　the　V(f,　z)　analytical　method,　it＇s　a　frequency　domain　method;　which　is　to　obtain　the　experimental　dispersion　curves.　The　mechanical　properties　of　the　nickel　coating　can　be　inversed　by　changing　the　longitudinal　wave　velocity　and　shear　wave　velocity　of　nickel　coating　to　fit　the　theoretical　dispersion　curves　with　the　experimental　dispersion　curves.　The　experimental　results　show　the　method　is　feasible,　this　study　lays　a　foundation　for　evaluating　mechanical　properties　for　semi-infinite　coating　materials.