Milling　involute　tooth　surface　with　universal　cutting　tool　overcomes　the　difficult　problem　of　customizing　tool　for　nonstandard　gear　machining.　It　is　difficult　for　gear　manufacturers　to　gain　an　advantage　in　market　competition　because　of　the　long　cycle　of　customized　cutting　tools.　In　this　paper,　the　milling　path　of　involute　tooth　surface　by　a　general　cutting　tool　is　studied,　and　how　to　obtain　the　uniform　surface　roughness　of　involute　tooth　surface　and　the　cutting　path　scheme　of　cutting　tool　is　discussed.　The　key　point　of　this　paper　is　to　put　forward　the　scheme　of　tool　path　in　the　milling　process.　The　end　profile　of　involute　gear　is　modeled　by　an　analytic　method,　and　the　equidistant　contour　of　the　profile　of　involute　gear　is　established　by　using　the　principle　of　normal　deviation,　which　provides　an　accurate　position　point　for　the　cutting　tool.　Copyright　©　2019　ASME.