To　predict　life　of　multiaxial　low　cycle　fatigue　more　conveniently,　a　multiaxial　low　cycle　fatigue　damage　parameter　is　proposed　based　on　the　crack　extension　characteristics　and　changes　of　the　maximum　shear　strain　and　the　corresponding　normal　strain　on　the　maximum　shear　stain　plane　and　the　maximum　shear　strain　plane　is　considered　as　the　critical　plane.　The　maximum　shear　strain　and　corresponding　normal　strain　are　selected　as　the　basic　damage　parameters　for　low　fatigue.　The　life　prediction　is　proceeded　by　using　the　model　with　GH4169　alloy　and　45　steel.　The　results　showed　that　the　error　between　life　prediction　and　experimental　results　is　basically　within　2　factors.