The　hot　deformation　behavior　of　Al-0.04Er-0.08Zr　alloy　was　investigated　by　hot　compression　tests　in　the　temperature　range　from　200　degrees　C　to　450　degrees　C.　True　stress-true　strain　curves　were　analyzed　by　linear　fitting　using　Arrhenius-type　equation,　and　deformation　microstructure　was　studied　by　TEM.　The　results　indicate　that　dynamic　recovery　is　the　dominated　softening　mechanism　for　both　the　solutionized　and　the　aged　sample　during　hot　compression.　Hot　deformation　especially　at　high　temperature　and　low　strain　rate　induces　rapid　precipitation　in　the　solutionized　samples.　Dynamic　precipitation　apparently　leads　to　the　increase　of　the　flow　stress　of　the　solutionized　samples　during　hot　compression　process,　but　does　not　effectively　enhance　the　microhardness　of　the　deformed　samples.　The　dynamic　precipitation　also　leads　to　deviations　of　the　Arrhenius-type　fitting　of　the　stress-strain　curves.