The　primary　problem　of　eco-materials　is　how　to　judge　whether　a　material　is　environmentally　friendly　or　not,　and　the　method　of　life　cycle　assessment　is　usually　used　to　evaluate　it.　The　depletion　of　mineral　resources　is　a　very　important　indicator　of　LCA,　but　its　characterization　is　still　filled　with　dispute.　At　present,　the　most　commonly　used　method　is　CML,　which　is　put　forward　by　Leiden　University,　and　its　core　idea　is　that　using　the　ratio　of　exploitation　amount　and　reserves　of　mineral　resources　as　the　degree　of　scarcity.　Although　being　accepted　by　most　of　the　scholars　at　work　on　LCA,　CML　doesn＇t　grasp　the　essence　of　the　depletion　of　mineral　resources.　Recently,　a　new　assessment　method,　injecting　new　ideas　to　the　conventional　life　cycle　assessment,　combines　exergy　with　LCA　is　arising,　which　can　be　used　to　solve　some　specific　problems　of　LCA　especially　the　depletion　of　mineral　resources.　In　this　paper,　two　results　of　elements＇　exergy　calculated　by　Rivero　and　Szargut　respectively　are　compared,　and　the　exergy　of　some　natural　minerals,　which　can　be　used　in　LCA　and　other　minerals-related　research,　is　calculated　based　on　the　data　of　Chinese　mineral　resources.