In　order　to　improve　the　dynamic　characteristics　of　a　glass-edge　grinding　machine　with　a　long　ball　screw　(3.71　m),　and　to　reduce　undesirable　effects　caused　by　grinding　vibration,　the　finite　element　model　(FEM)　of　a　grinding　wheel　carriage　was　established　using　ANSYS　parametric　design　language.　And　compared　with　the　test　modal　analysis　results　of　the　grinding　wheel　carriage,　the　precision　of　its　established　FEM　basically　met　the　engineering　requirement.　Then,　the　influences　of　diameter　of　ball　screw,　fixed　board　thickness　of　slide　block,　contact　surface　stiffness　of　ball　screw　and　bearings,　and　working　position　of　the　grinding　wheel　carriage　on　the　dynamic　characteristics　of　the　grinding　wheel　carriage　were　investigated.　Finally,　the　design　improvement　scheme　of　the　grinding　wheel　carriage　for　the　new　generation　of　glass-edge　grinding　machine　was　presented.　The　feasibility　and　validity　of　the　proposed　design　scheme　were　verified　through　a　practical　usage.