A　healing　method　for　fatigue　damage　was　investigated　by　laser　shock　peening　and　laser　irradiation　with　excimer　laser　for　polycrystalline　copper　film.　It　is　found　that　the　sum　of　the　consumed　fatigue　ductility　and　the　total　fatigue　ductility　for　damaged　specimen　after　both　laser　treatments　is　equal　to　the　total　fatigue　ductility　for　undamaged　specimen　after　both　laser　treatments.　According　to　the　relationship　of　plasticity,　two　variables　are　defined.　One　is　healing　variable　and　the　other　one　is　enhancement　variable.　Based　on　the　relationship　of　damage　variable,　healing　variable　and　enhancement　variable,　a　residual　fatigue　life　prediction　method　is　proposed.　The　results　show　that　the　predicted　lives　by　the　proposed　method　agree　well　with　the　experimental　results.