The effect of textured cemented carbide tool on cutting performance in machining of titanium alloy was studied.Experimental research on machining of titanium alloy was carried out to analyze the change laws of cutting force and friction coefficient when cutting by untextured and textured tools under the conditions of dry cutting and cryogenic minimum quantity lubrication(CMQL).Results show that the microgrooved tool has the best cutting performance under CMQL and the worst cutting performance under dry cutting,which indicates that the microgroove can effectively improve the tribological performance of the tool under CMQL,but it increases the friction and wear of the tool under the dry cutting.The cutting temperature of textured tools under high speed dry cutting was analyzed by simulated.It is found that the cutting temperature of textured tools is higher that of untextured tools under high speed dry cutting,this is because the surface texture increases the roughness of the tool surface and aggravates the friction between the cutter and the chip interface.