Building　Information　Modeling　(BIM)　is　a　very　effective　technology　for　supporting　lean　construction.　However,　the　current　application　of　BIM　during　the　construction　phase　does　not　incorporate　all　necessary　elements　of　the　construction　site　in　a　comprehensive　manner.　Additionally,　the　depiction　of　the　construction　process　lacks　the　desired　level　of　detail.　These　limitations　impede　the　application　of　BIM-based　lean　construction.　In　this　paper,　we　propose　a　full-element　and　multi-time-scale　modeling　approach　to　BIM　during　the　construction　phase.　Our　method　first　establishes　a　full-element　model　by　reconstructing　the　main　body　of　the　building　based　on　construction　subdivision　dimensions,　construction　technology,　and　management　objectives.　We　then　create　a　three-dimensional　model　that　includes　a　process　elements　model　of　circulating　materials,　temporary　facilities,　construction　machinery,　and　surrounding　environmental　elements.　The　integrated　model　of　these　elements　provides　a　comprehensive　representation　of　BIM　at　any　static　time　point.　Second,　we　conduct　multi-time-scale　simulations　based　on　the　full-element　model.　Our　approach　divides　the　entire　time,　local　time,　and　special　time　points　into　three　scales　to　simulate　project　progress,　local　structure　construction　technology,　and　working　conditions.　A　case　study　of　the　Daxing　International　Airport　construction　project　verifies　that　our　method　can　achieve　lean　management　of　construction　resources.　Full-element　modeling　provides　a　comprehensive　BIM　representation　at　any　static　time　point,　thereby　supporting　lean　construction　by　improving　construction　resource　management,　reducing　costs,　and　enhancing　efficiency.　©　2023　by　the　authors.