This　paper　develops　a　new　error　loaded　contact　analysis　method　for　a　cycloid　bevel　gear　which　considers　elastic　deformation　of　the　gear　pair,　supporting　system　distortion,　tooth　manufacturing　errors,　and　machine　setting　errors.　The　method　provides　a　more　realistic　analysis　when　using　a　loaded　tooth　contact　analysis　and　can　be　used　to　solve　the　true　contact　area　under　load,　transmission　errors,　load　distribution,　and　manufacturing　simulation.　With　V　-H-J　setting　parameters　and　machine　setting　parameters　we　can　compensate　for　error　impact　to　improve　the　transmission　performance　and　to　modify　the　size　and　position　of　the　contact　area.　As　a　numerical　example,　the　contact　status　of　a　helical　gear　pair　having　a　90　degree　crossing　angle　is　analyzed　with　analytical　software　using　the　error　loaded　tooth　contact　method.　The　numerical　results　show　that　the　method　is　a　reasonable　and　efficient　way　to　enhance　the　transmission　characteristics　of　a　cycloid　bevel　gear.　The　method　may　also　be　extended　to　hypoid　gearing　types.　©　2012　American　Scientific　Publishers.　All　rights　reserved.