In　the　present　work,　the　microstructure,　texture　and　mechanical　properties　of　as-extruded　Mg-xZn-xEr　(x　=　2,　4　and　6)　alloys　were　investigated.　The　results　showed　that　the　W-phase　in　the　as-cast　alloys　was　destroyed　during　hot　extrusion　process.　The　distribution　of　the　W-phase　is　more　uniform　when　the　extrusion　temperature　is　400　degrees　C,　and　the　texture　has　also　been　a　certain　degree　of　weakening.　With　increase　in　the　volume　fraction　of　the　primary　W-phase,　the　particle-stimulated　nucleation　(PSN)　of　recrystallization　was　activated.　It　was　suggested　that　the　recrystallization　via　PSN　should　lead　to　weak　texture.　Good　matching　between　strength　and　elongation　is　achieved　in　the　Mg-6Zn-6Er　alloy　extruded　at　400　degrees　C,　of　which　the　ultimate　tensile　strength　(sigma(b))　and　the　yield　tensile　strength　(sigma(0.2))　were　328　(+/-　2.5)　MPa　and　283　(+/-　2.2)　MPa,　respectively,　companying　with　an　elongation　of　19.7%　(+/-　1.2).　(C)　2014　Elsevier　B.　V.　All　rights　reserved.