The Mesozoic magmatic intrusion eventswere proved with theXianlin-Qianjia granodiorites, Bashan-Changleqiaoand Heshanwu-Zhucun monzogranites inYuhang-Lin’an-Fuyangregions, West Zhejiang, which closely related to mineralization. The zircon Shrimp U-Pb dating results shows that the Mesozoic magmatic intrusion eventsoccurred inlate Jurassic (152~147Ma), early EarlyCretaceous (139~137Ma) and late EarlyCretaceous (104~103Ma), respectively corresponds to the rock-formation periods of granodiorites, monzogranites and granites,and indicates evolution with granodiorite→monzogranite→granitefrom early to late, consistent with the differentiation is gradually weakened of the LREE/HREEand HREE. Geochemical characteristics shows that the Mesozoic intrusive rocks had low TFeO/MgO(1.72-5.28), significant negative correlation between SiO2 and P2O5, characteristizing I-type granites, and originated from the anatexis of basement rocks of continental crustand strong crust-mantle mixing. Research shows that the granodiorites formation may have been closely related to the subduction of pacific plate in late Jurassic, the monzogranitesformed inthe post-collisional environment from compression to extensionin earlyEarly Cretaceous, and the granites corresponded tothe continued extension environment in late Early Cretaceous. The petrogenic ages of Mesozoic intrusive rocks had good consistency with the three regional ore-forming times,which happened atlate Jurassic(164~145Ma), early Early Cretaceous(139~135Ma) and late Early Cretaceous(109Ma±),suggesting a good ore prosprct in Yuhang-Lin’an-Fuyangregions.