In　order　to　intuitively　understand　the　internal　structure,　working　principle　and　operating　course　of　the　magnesium　alloy　extruder,　furthermore　optimize　the　extrusion　process,　the　problem　of　modeling　and　analysis　to　the　model　is　solved　in　this　paper.　A　method　is　studied　to　create　three-dimensional　visualization　of　virtual　environments　based　on　the　extrusion　principle　of　magnesium　alloy　and　virtual　reality　technology.　All　models　are　created　by　using　SOLIDWORKS　or　3DMAX　software,　the　next　step　is　that　3D　models　are　imported　directly　into　EON　Studio　by　＇EON　Reptor-web　studio-3DMAX＇　plug-ins　to　create　a　virtual　environment.　When　the　processing　of　virtual　simulation　program　is　completed,　an　interactive　assembly　system　of　magnesium　alloy　extrusion　machine　can　be　achieved.　As　the　system　has　the　features　with　imagination　and　real-time,　self-view　and　interactive　operation　is　feasible.　This　method　can　effectively　solve　the　related　issues　of　extruders　and　the　extrusion　process.　It　will　be　utilized　to　prepare　plastic　deformation　behavior　of　magnesium　alloy　extrusion　and　isothermal　extrusion　process　simulation.　©　2011　IEEE.