The　genesis　of　the　gold　deposits　in　the　eastern　North　China　Craton　(NCC)　has　long　been　disputed.　Many　would　relate　the　gold　mineralization　to　magmatism.　The　Wulong　in　the　Liaodong　Peninsula　is　a　classic　example　in　the　eastern　NCC　and　was　considered　to　be　of　magmatic　hydrothermal　origin　previously.　Nevertheless,　we　propose　a　metamorphic　devolatilization　model　to　explain　its　genesis　based　on　geological,　fluid　inclusion　and　O-Sr-Li　isotopic　study.　The　geological　profiles,　temperatures,　salinities,　and　O　isotopes　of　the　ore-forming　fluids　at　Wulong　show　no　spatial　variations　over　a　600　m　vertical　depth　interval.　These　evidence　convincingly　prove　its　vertically　extensive　feature,　which　is　similar　to　orogenic　gold　deposits,　but　different　from　magmatic　hydrothermal　systems.　The　initial　Sr　isotopes　of　the　ore-forming　fluids　(0.71435　to　0.71578)　fall　into　the　range　of　metabasalts　from　the　Liaohe　Group　(the　Paleoproterozoic　basement),　indicating　that　metabasalts　are　the　probable　sources.　Lithium　and　its　isotopic　modelling　further　suggest　that　metamorphic　devolatilization　of　metabasalts　(with　chain　silicates　Ch,　phyllosilicates　Ph,　and　quartz　Qtz　as　endmembers;　Ch,　Li　≈　5　ppm,　δ7Li　≈　8‰;　Ph,　Li　≈　63　ppm,　δ7Li　≈　−1‰;　Qtz,　Li　≈　10　ppm,　δ7Li　≈　30‰)　could　account　for　the　Li　concentrations　(5–41　ppm)　and　δ7Li　value　of　the　fluid　(21.4‰)　of　the　Wulong　gold　deposit.　Rayleigh　fractionation　in　a　closed　system　led　to　large　Li　isotopic　variation　of　the　ore-forming　fluids　(21.4　to　11.0‰).　The　metamorphic　devolatilization　model　based　on　the　vertically　extensive　feature,　Sr　isotopic　constraint　and　Li　isotopic　modelling　is　in　striking　contrast　with　previous　qualitative　isotopic　studies　that　support　a　magmatic　hydrothermal　origin　for　the　Wulong　and　other　granitoid-hosted　gold　deposits　in　the　eastern　NCC.　Integrated　with　geological　characteristics　and　radiogenic　isotopes,　this　study　here　shows　that　Li　isotopes　can　provide　new　constraints　on　the　genesis　of　orogenic　gold　deposits.　©　2023　The　Author(s)