The　work　aims　to　investigate　the　effects　of　temperature　variation　on　tool　adhesion,　coating　peeling　and　tool　wear　during　intermittent　machining.　An　experimental　platform　based　on　intermittent　turning　which　imitated　milling　process　was　built.　The　cutting　temperature　of　the　flank　at　different　cutting　speed　during　intermittent　machining　was　measured　by　thermocouple　method,　the　wear　morphology　of　the　flank　changing　with　cutting　speed　was　observed　by　scanning　electron　microscopy　(SEM)　with　energy　dispersive　spectroscopy　(EDS)　and　the　element　composition　of　the　tool　wear　area　was　analyzed.　The　relationship　between　the　flank　temperature　and　tool　wear　was　described　and　the　flank　wear　mechanism　of　TiAlN　coated　cemented　carbide　tools　in　intermittent　machining　of　beryllium　copper　alloy　C17200　was　investigated.　The　tool　temperature　showed　a　peak　at　v=500　m/min　with　the　increase　of　cutting　speed.　The　higher　the　temperature　was,　the　more　severe　the　coating　peeling　and　adhesive　wear　on　the　flank　were.　The　coating　peeling　and　adhesive　wear　were　the　most　severe　at　a　cutting　speed　of　500　m/min.　Then,　this　phenomena　slowed　down　as　the　tool　temperature　decreased.　Coating　peeling　and　adhesive　wear　at　a　cutting　speed　of　600　m/min　were　reduced　compared　to　that　at　500　m/min.　The　high　temperature,　impact　and　instability　of　processing　environment　generated　by　the　tool　continuously　subjected　to　＇loading-unloading＇　and　＇heating-cooling＇　during　intermittent　machining　process　are　the　main　causes　of　adhesion　phenomenon,　coating　peeling　and　tool　wear.　Coating　peeling　and　adhesive　wear　are　the　main　wear　form　leading　to　tool　failure　in　intermittent　machining　of　beryllium　copper　alloy.　©　2020,　Chongqing　Wujiu　Periodicals　Press.　All　rights　reserved.