Foam　glass　was　widely　used　as　a　green　energy　saving　material　with　good　performances　of　light,　thermal　insulation　and　sound　absorption.　Using　waste　glass　as　raw　material　for　foam　glass　production,　can　not　only　turn　waste　into　treasure　and　reduce　resource　consumption,　but　also　protect　the　environment.　In　this　article,　the　foam　glass　which　produced　in　Jiaxing,　China　was　studied　based　on　the　method　of　life　cycle　assessment　(LCA),　and　the　resources,　the　energy　consumption　and　the　emission　of　pollutants　at　the　same　time　were　evaluated.　The　results　show　that　the　characterization　value　of　GWP　is　the　largest.　The　foaming　stage　is　the　main　contributor　which　accounts　for　79.7%.　Similarly,　the　foaming　stage　is　the　major　contributor　to　AP,　POCP,　EP　and　HTP　.The　characterization　value　of　ADP　is　the　smallest.　The　foaming　stage　and　annealing　stage　is　the　main　contributor　to　ADP　which　account　for　43.0%,　49.7%　respectively.　It　has　been　found　that　the　foaming　stage　makes　the　most　contribution　to　the　environmental　impact.　AP,　GWP,　POCP　and　EP　of　the　foaming　stage　are　extremely　prominent　compared　to　other　stages.　The　authors　used　the　methods　of　equal　weight　coefficient　and　AHP　to　weight　the　single　indicator.　The　results　show　that　the　environment　impact　caused　by　the　foaming　stage　is　the　largest,　then　grinding　stage　and　cutting　stage　follow　behind.　The　environment　impact　caused　by　the　transportation　stage　is　the　smallest.　©　2016　Trans　Tech　Publications,　Switzerland.