Based　on　Wang　and　Brown＇s　reversal　counting　method,　a　new　approach　to　the　determination　of　the　critical　plane　is　proposed　by　the　defined　plane　with　a　weight-averaged　maximum　shear　strain　range　under　multiaxial　variable　amplitude　loading.　According　to　the　determined　critical　plane,　a　detailed　procedure　of　multiaxial　fatigue　life　prediction　is　introduced　to　predict　lives　in　the　low-cycle　multiaxial　fatigue　regime.　The　proposed　approach　is　verified　by　two　multiaxial　fatigue　damage　models　and　Miner＇s　linear　cumulative　damage　law.　The　results　showed　that　the　proposed　approach　can　effectively　predict　the　orientation　of　the　failure　plane　under　multiaxial　variable　amplitude　loading　and　give　a　satisfactory　life　prediction.