The　study　aims　to　reveal　the　characteristics　of　material-energy　metabolism　and　environmental　impacts　for　magnesium　produced　using　the　Pidgeon　process　in　China.　Life　cycle　assessment　combined　with　materials　flow　analysis　was　used　for　this　study.　The　results　show　that　the　total　materials　input　and　direct　materials　input　of　Chinese　magnesium　ingots　is　76　t/t　Mg　ingot　and　24　t/t　Mg　ingot,　respectively.　The　quantity　of　ecological　rucksacks　reaches　3.1　times　of　that　of　direct　materials　input.　The　time　series　analysis　shows　that　the　direct　emissions　of　CO2　and　SO2　increase　with　the　rapid　development　of　the　magnesium　industry,　although　the　consumption　factor　unit　decreases　with　the　time　passing.　The　direct　emissions　of　CO2　and　SO2　mainly　attribute　to　the　consumption　of　fossil　fuels　and　the　protection　of　molten　magnesium.　Furthermore,　the　material　consumption　and　environmental　impacts　generated　by　the　ferrosilicon　production　may　not　be　disregarded.