3003　aluminum　melt　was　treated　with　efficient　purification,　and　it　was　deformed　by　isothermal　compression　in　the　range　of　deformation　temperature　300-500　°C　at　strain　rate　0.0l-10.0　s-1　with　Gleeble-1500　thermal　simulator.　The　results　show　that　efficient　purification　treatment　can　significantly　reduce　the　impurities,　and　make　inclusion　size　smaller,　uniform　distribution.　Room　temperature　mechanical　properties　were　significantly　improved.　At　the　same　strain　rate,　the　flow　stress　of　3003　aluminum　alloy　decreases　with　the　increase　of　deformation　temperature.　The　flow　stress　increases　with　the　increase　of　strain　rate　under　the　same　deformation　temperature.　Two　kinds　of　3003　aluminum　alloys　with　different　purification　treatments　both　have　dynamic　recrystallization　characteristics.　Especially　when　the　strain　rate　reaches　10.0　s-1　the　rheological　curve　appears　sawtooth　fluctuation　and　the　alloy　may　have　discontinuous　dynamic　recrystallization.　©　2018　Trans　Tech　Publications,　Switzerland.