The　Huangtian　tungsten　deposit　is　a　recently　discovered　large-scale　scheelite　deposit　on　the　northern　edge　of　the　Laojunshan　polymetallic　mineralization　area,　in　Southeast　Yunnan　province.　Previous　research　has　investigated　the　geological　characteristics　of　the　deposit　and　the　evolution　of　mineralization　fluids.　However,　the　absence　of　a　precise　determination　of　its　mineralization　age　and　the　contentious　origin　of　its　mineralization　and　materials　have　impeded　the　academic　community＇s　comprehensive　comprehension　of　its　mineralization　mechanism.　To　determine　this　problem,　this　article　conducted　in-situ　U-Pb　dating　and　in-situ　Sr　isotope　composition　on　main　mineralization　stage　I　scheelite　based　on　detailed　drilling　core　catalogs　and　mineral　microstructure　analyses.　The　results　show　that　the　scheelite　formed　(64.6　±3.7)　Ma　(re　=35,　MSWD　=1.6),　reflecting　that　the　mineralization　occurred　in　the　early　Paleocene.　When　considered　in　conjunction　with　the　geological　background　of　the　mine　area,　it　is　hypothesized　that　the　mineralization　is　closely　related　to　the　deep,　concealed　granite　body　in　the　southern　part　of　the　mine　section.　The　Sr/Sr　values　(0.720,　25-0.728,　40)　of　the　Huangtian　scheel-ite　are　significantly　higher　than　those　of　the　continental　lithospheric　mantle,　indicating　a　crustal　source.　The　initial　Sr　isotope　ratios　of　the　huangtian　scheelite　and　the　laojunshan　granite　are　consistent,　suggesting　that　they　may　have　originated　from　a　common　hydrothermal　system　(long-lived　magma　chamber).　The　elevated　concentration　of　Ca　in　Huangtian　scheelite　is　primarily　due　to　the　sericitization　of　plagioclase　in　the　granodiorite.　The　W　element　in　Huangtian　scheelite　originates　from　the　granodiorite　by　orthomagmatic　model.　This　study　defines　the　metallogenic　era　of　tungsten　deposits　in　Huangtian　and　traces　the　source　of　their　mineralized　materials.　These　findings　lay　a　foundation　for　a　deeper　understanding　of　the　metallogenic　mechanisms　and　enrich　our　knowledge　of　the　polymetallic　metallogenic　belt　in　Southeast　Yunnan.　Ultimately,　this　provides　a　theoretical　basis　for　further　prospecting　in　the　region.　©　2025　China　University　of　Geosciences.　All　rights　reserved.