A　grinding　wheel　usually　consists　of　numerous　abrasive　grains　with　high　rigidity　and　a　kind　of　bond.　However,　there　exists　a　rigidity　contact　due　to　relatively　thin　bond　layer　between　abrasive　grains,　which　results　in　high　rigidity　of　grinding　wheel.　Such　grinding　wheel　has　advantages　as　high　grinding　ability　and　high　grinding　efficiency,　but　they　are　easy　to　induce　scratches　on　the　ground　surfaces　and　hence　make　bad　surface　machining　quality.　In　order　to　improve　the　high　rigidity　of　grinding　wheel　such　as　SiC　grinding　wheel,　in　this　paper　a　small　amount　of　carbonized　and　sieved　wood　powder　were　mixed　into　SiC　abrasives,　thus　the　grinding　wheel　could　get　characteristics　of　semi　elasticity　and　improve　the　surface　machining　quality.　A　large　number　of　grinding　experiments　on　brittle　materials　such　as　granite　were　carried　out　with　the　above　wood　powder　grinding　wheel.　The　investigations　showed　that　the　wood　powder　grinding　wheel　had　higher　grinding　ability　and　efficiency,　and　a　very　finish　surface　of　Ra8.0　nm　and　Ry88　nm　could　be　achieved.