The　high　temperature　strength　of　aluminum　can　be　improved　by　forming　thermal　stable　precipitates　of　microalloying　elements　such　as　Er,　Sc　and　Zr.　Our　previous　research　indicates　that　composite　addition　of　Er　and　Zr　can　improve　the　amount　of　precipitations,　but　the　aging　time　to　approach　the　peak　hardness　is　relatively　long.　In　this　paper,　we　will　focus　on　the　deformation　behavior　of　the　Al-Er-Zr　alloy　during　hot　deformation　process　and　the　corresponding　microstructure　evolution.　The　results　show　that　the　strain　can　induce　rapid　precipitation　in　Al-Er-Zr　alloy　during　hot　working　conditions.　The　mechanism　of　the　rapid　precipitation　and　its　effect　on　thermomechanical　processing　are　discussed.