The　effects　of　kinds　of　secondary　phases　on　texture　and　mechanical　properties　of　Mg-Zn-Er　alloys　were　investigated.　The　results　suggest　that　the　I-phase　has　a　great　effect　on　modification　of　the　texture　via　the　discontinuous　dynamic　recrystallization　mechanism　(DDRX),　which　tends　to　form　well-developed　equiaxed　recrystallized　grams　Meanwhile,　the　W-phase　plays　an　important　role　in　refining　the　gram　size　via　continuous　dynamic　recrystallization　(CDRX),　companied　with　a　higher　maximum　texture　intensity.　Thus,　the　Mg-6Zn-1Er　alloy　containing　I-phase　shows　a　performance　of　higher　elongation　of　20.4%　The　Mg-2Zn-2Er　alloy　including　W-phase　displays　a　better　tensile　strength,　and　the　yield　strength　(YS)　is　about　247　MPa.