This　paper　gets　two　inventories　of　environmental　load　of　two　kinds　of　gypsum　plasterboards　by　studying　the　production　processes　of　the　natural　gypsum　board　and　flue　gas　desulfurization　(FGD)　gypsum　through　life　cycle　assessment.　The　results　show　that　the　total　life　cycle　environment　load　of　the　natural　gypsum　boardis　6%　higher　than　the　FGD　gypsum　board.　Human　toxicity　effect　increases　by　72%　and　the　consumption　of　non-renewable　resources　is　76%　higher　than　the　total　life　cycle　environment　load　of　natural　gypsum　board.