In　this　study　AZ31　sheet　with　a　thickness　of　1.2mm　and　diameter　of　52mm　was　simulated　to　press　into　a　dish　by　a　finite　element　method(FEM)　software,　which　to　obtain　better　processing　of　plastics　forming　of　magnesium　alloy　by　varying　die　parameters.　In　order　to　find　the　way　of　development　on　drawing　property　and　to　formulate　the　rational　stamping　processing,　simulations　have　been　applied　on　the　maximum　principal　stress　various　with　round　radius　of　dent　die　and　round　radius　of　punch　and　die　gap.　Simulation　results　show　that:　to　obtain　a　dish　of　29mm　diameter,　a　sheet　of　AZ31　magnesium　with　a　thickness　of　1.2mm　and　diameter　of　52mm　has　been　drawn,　the　fracture　occurring　at　the　corner　of　dish　wall　bottom.　the　ability　of　drawing　varies　with　the　round　radius　of　dent　die,　which　better　radius　is　3.8　mm.　In　the　same　way　better　round　radius　of　punch　is　3.0　mm,　while　better　half　gap　is　1.8mm.　Experiments　also　show　that　high　diameter　ratio　has　been　increased　with　the　various　of　die　parameters　and　forming　ability　of　material　has　been　developed.　It　is　reliable　of　simulation　of　finite　element　method.