Tool　wear　is　the　main　factor　of　tool　failure　in　cutting　difficult-to-machine　materials.　This　paper　aims　to　analyze　the　anti-friction　mechanism　of　laser　machining　micro-groove　cemented　carbide.　Firstly,　micro-grooves　were　prepared　on　the　cemented　carbide　surface　by　laser　processing.　Secondly,　we　conducted　an　analysis　of　the　mechanical　properties　of　laser　texturing　by　measuring　hardness.　Finally,　we　studied　the　anti-friction　mechanism　of　micro-grooves　by　a　wear　test　(ASTM　G133-05).　Results　show　that　surface　hardness　increases　after　laser　treatment.　The　friction　coefficient　and　surface　wear　of　micro-groove　cemented　carbide　are　significantly　reduced　compared　with　the　conventional　surface.　The　friction　coefficient　of　PE　and　OB　decreased　by　20.6%　and　10.7%,　respectively.　It　is　found　that　the　direction　of　micro-grooves　determines　whether　metal　debris　can　be　removed-the　stronger　the　ability　to　remove　metal　debris,　the　better　the　tribological　properties　of　the　micro-groove　surface.