Investigations　have　shown　that　human　error　(HE)　is　the　most　common　cause　of　accidents　involving　lifting　operations.　So　it　is　essential　to　conduct　human　reliability　analysis　(HRA)　in　lifting　operations.　The　estimation　of　human　error　probabilities　(HEPs)　is　a　key　to　HRA.　In　this　paper,　six　useful　performance　shaping　factors　(PSFs)　of　lifting　operations　were　introduced　and　the　success　likelihood　index　method　(SLIM)　was　applied　to　determine　the　HEPs　of　various　lifting　operation　errors.　A　numerical　example　demonstrated　the　effectiveness　of　the　proposed　approach.