In　nanoindentation　testing　of　materials,　the　analytical/numerical　models　to　connect　the　indentation　load,　indentation　depth　and　material　properties　are　crucial　for　the　extraction　of　mechanical　properties.　This　paper　studied　the　methods　of　extracting　the　mechanical　properties　of　nonlinear　elastic　materials　and　built　general　relationships　of　the　indentation　load　and　depth　of　hyperelastic　materials　combined　with　the　dimensional　analysis　and　finite　element　method　(FEM).　Compared　with　the　elastic　contact　models　and　other　nonlinear　elastic　contact　models,　the　proposed　models　can　extract　the　mechanical　properties　of　nonlinear　elastic　materials　under　large　deformation　simply　and　effectively.　Copyright　©　2013　Tech　Science　Press.