Minimum　quantity　lubrication　(MQL)　as　a　green　technology　is　widely　employed　in　metal　removal　manufacturing,　which　can　achieve　lower　cutting　temperature　and　higher　machining　efficiency　environmentally.　However,　how　to　evaluate　the　tool　temperature　distribution　in　drilling　process　with　MQL　is　still　significantly　lacking.　For　this　purpose,　a　tool-foil　thermocouple　system　was　developed　and　the　influence　of　cooling　conditions　and　cutting　variations　on　tool　temperature　has　been　experimentally　analyzed　during　high-throughput　drilling　of　aluminum　alloy　AA2024　in　current　study.　Results　indicate　that　the　maximum　temperature　along　cutting　edge　is　observed　near　drill　center　due　to　heat　accumulation.　Using　MQL　can　decrease　the　temperature　difference　between　drill　center　and　outer　corner　compared　with　dry　and　air　cooling　conditions.　Temperature　distribution　profiles　are　more　sensitive　to　feed　rate　than　cutting　speed.　Increasing　feed　rate　can　result　in　a　great　increasing　of　average　temperature.　Chipping　is　only　observed　on　the　peripheral　corner　under　MQL　condition,　while　adhesion　and　built　up　edge　(BUE)　almost　extend　across　the　whole　cutting　edge　under　dry　drilling　due　to　the　absence　of　lubrication　and　coolant.　©　2020　The　Society　of　Manufacturing　Engineers