A　fatigue　life　prediction　method　was　investigated　after　healing　fatigue　damage　by　excimer　laser　irradiation　treatment　for　the　damaged　copper　film.　First,　the　variations　of　residual　fatigue　life　and　strain　range　for　the　damaged　specimens　after　laser　irradiation　healing　treatment　were　analyzed.　The　results　showed　that　the　fatigue　damage　can　be　effectively　healed　by　laser　irradiation　for　copper　film.　The　presented　healing　phenomenon　during　laser　irradiation　process　showed　that　the　recovery　of　fatigue　damage　can　result　in　the　improvement　in　fatigue　life　for　the　damaged　copper　film.　Then,　based　on　the　fact　that　the　strain　concentration　factor　of　copper　film　had　not　been　changed　before　and　after　laser　irradiation　treatment,　a　residual　fatigue　life　prediction　method　was　proposed　by　the　local　stress　transformation.　The　predicted　residual　fatigue　lives　by　the　proposed　method　agreed　well　with　the　experimental　results　for　copper　film　after　laser　irradiation　treatment.