Al2O3/La2O3/(W,Mo)C nanocomposite powders with uniform particle size were prepared by hydrothermal method,the cementless carbide tools of Al2O3/La2O3/(W,Mo)C were prepared by spark plasma sintering.The surface microtextures with different groove parameters were prepared on the tool surface by laser machining technology,and the effect of different groove parameters on the dry cutting performance of titanium alloy was studied by orthogonal test.The results show that groove space has the greatest influence on the cutting force and roughness,following by the groove depth,and the groove width has the least influence.When the groove depth,groove pitch and groove width is 10 μm,100 μm and 30 μm respectively,the Al2O3/La2O3/(W,Mo)C binderless tool has the best cutting performance for TC4 alloy,the rake face has no wear and the real face has only boundary wear.The groove texture can effectively inhibit the crater wear and improve the tool life.