A　three-dimensional　sliding　model　of　micro-scale　was　established　between　two　rough　surfaces　exhibiting　fractal　behavior,　and　the　thermo-mechanical　coupling　factor　in　the　process　of　contact　was　considered.　The　surface　temperature　in　sliding　processes　was　analysed　using　the　finite　element　analysis　taking　into　account　Ti-6Al-4V　elastic-plastic　properties　with　material　failure.　The　transient　surface　temperature　distribution　of　the　rough　surface　was　presented.　The　numerical　results　showed　that　the　surface　temperature　in　initial　time　rise　sharply　and　then　tend　to　be　temporarily　stable　until　a　new　contacted　asperity　coming　into　interaction.　With　the　increase　of　friction　slide　distance　the　surface　temperature　was　to　present　the　state　of　fluctuating.　The　values　of　highest　temperature　at　contact　zones　were　different,　while　the　highest　temperature　at　contact　zone　was　higher　relative　to　the　greater　interface　shear　strength.　Compared　with　the　experimental　data　of　the　literatures,　it　was　concluded　that　the　rationality　of　the　simulation,　these　results　also　deepened　understanding　the　reason　of　the　friction　and　wear.　©　2015,　Journal　of　Mechanical　Strength.　All　right　reserved.