To　cope　with　the　world　energy　crisis　and　global　climate　change,　the　governments　of　the　world　attach　great　importance　to　the　development　of　new　energy　industry.　The　production　and　application　of　power　lithium-ion　battery　also　attract　much　attention.　Based　on　the　life　cycle　model　we　built　for　the　lithium　iron　phosphate　(LFP)　cathode　materials　production,　the　resources　and　energy　consumption　inventory　of　LFP　cathode　production　was　calculated.　The　environmental　impacts　of　LFP　production　for　a　power　lithium-ion　battery　were　analyzed.　The　results　showed　that　the　synthesis　process　of　LFP　production　was　the　key　production　stage　and　accounted　for　52.93%　of　the　accumulated　environmental　burden,　followed　by　Li2CO3　preparation,　(NH2)(2)HPO4　preparation　and　Fe3O4　preparation,　which　accounted　for　20.90,　18.90　and　7.27%　of　overall　environmental　burdens　respectively.　The　key　impact　categories　of　LFP　production　were　human　toxicity,　fossil　depletion,　climate　change　and　acidification,　which　accounted　for　77.62,　6.36,　5.21　and　4.19%　of　total　environmental　impact,　respectively.　The　climate　change　potential　of　LFP　production　in　different　stages　was　compared　emphatically.　The　Li2CO3　preparation　was　the　key　stage　for　the　climate　change　potential,　which　accounted　for　50.59%　of　greenhouse　gases　emissions.　The　optimized　synthesis　process　could　be　conducive　to　reduce　the　greenhouse　gas　emissions　and　decrease　the　environmental　burden　caused　by　the　production　of　lithium　iron　phosphate.