In　order　to　increase　the　serving　life　of　the　cemented　carbide,　high　energy　pulsed　excimer　laser　ablation　was　conducted　on　the　surface　of　(W,Ti)C-Co　cemented　carbide　cutting　tool,　and　the　processing　parameters　were　optimized　The　morphology　of　ablation　surface　was　observed　by　SEM,　composition　analysis　was　applied　by　EDS.　The　results　showed　that　with　the　increase　of　laser　pulse　number,　the　Cobalt　binder　content　in　cemented　carbide　decreased,　while　the　micro-cracks　increased.　The　average　microhardness　of　laser　irradiation　region　increased　with　increasing　pulse　number.