It　is　a　measure　of　the　dynamic　performance　of　the　machine　tool　design　merits　of　the　important　performance　indicators.　This　paper　use　Pro/E　and　ANSYS　Workbench　integrated　development　platform,　for　a　certain　type　of　grinder　bed　for　three-dimensional　modeling　and　modal　analysis　to　improve　dynamic　performance,　and　based　on　the　results　of　the　various　parts　of　the　structure　size　and　internal　ribs　rational　layout　optimization　and　design,　so　as　to　provide　a　theoretical　basis　for　the　camshaft　grinding　machine　design.