Double　helical　gears　are　widely　applied　in　the　aviation,　marine　and　energy　equipment,　and　generally　required　to　be　modified　as　the　crowned　since　the　machining　error　and　assembling　error　of　the　gear　drive　are　inevitable.　The　crowned　gears　usually　operate　in　point　contact　mixed　elastohydrodynamic　lubrication　(EHL),　and　adhesive　wear　has　been　one　of　the　most　prominent　problems,　but　few　previous　researches　were　focused　on　this　problem.　In　this　work,　a　wear　life　prediction　model　of　crowned　double　helical　gears　in　point　contact　mixed　EHL　is　proposed.　The　tooth　profiles　of　the　crowned　gears　are　obtained　according　to　the　generating　principle,　and　the　load　is　attained　in　consideration　of　multi-tooth　pairs　contact.　The　contact　pressure　is　derived　from　Hertzian　elastic　contact　theory　and　load　sharing　concept,　and　the　sliding　distance　is　determined　by　a　generalized　model.　Then,　the　wear　rate　in　point　contact　mixed　EHL　is　evaluated　by　extending　the　Archard　theory　to　lubricated　case,　and　the　extended　Archard＇s　wear　model　is　used　to　formulate　the　gear　tooth　wear.　Moreover,　the　wear　life　prediction　model　which　takes　account　of　rotation　speed　and　input　torque　is　established,　and　the　influences　of　surface　roughness　and　crowned　amount　on　the　wear　life　of　the　crowned　gears　are　further　studied.　Results　show　that　surface　roughness　has　a　great　influence　on　the　wear　life　at　different　rotational　speeds,　while　input　torque　has　a　great　influence　on　the　wear　life　at　different　crowned　amount.　It　indicates　that　the　wear　life　of　the　crowned　double　helical　gears　can　be　improved　by　reasonable　matching　lubrication,　modification　and　working　parameters.