For　improving　the　dynamic　characteristics　and　reliability　of　the　face　gear,　the　finite　element　of　the　face　gear　was　established　with　NX　Advanced　Simulation　based　on　the　theory　of　vibration　mechanics　and　finite　element　method.　the　former　12　ranks　of　natural　frequencies　and　shapes　were　calculated　by　using　NX.　Nastran　solver,　The　results　provided　a　direct　theoretic　basis　for　improving　the　design　of　the　face　gear.　And　it　laid　a　foundation　of　dynamic　response　calculation　of　face　gear　at　the　same　time.