A lot of acid intrusions occur in Yuexi and are intruded in the North Dabie metamorphic Complex. Theycomprise monzo granite-syen ogranlie, granodion ie -quartz monzo di on ie and alkali granit e. Petrographi caland geochemical study of them indicates they were formed in the post-orogenic regimes. It is worthy tomention that an undeformed body ofgranodiorite-quartz monzodiorite is metaluminous (A/CNK, 0.8-0.9)and exhibits a smaller Eu anomaly (Eu/Sm 0.31). All granitoids in Yuexi district have early Cretaceousages of emplacement and negative εNd(0) (- 17 -26). They are plotted as a horizontal zone on εNd,(0)- εSr(0)diagram, indicating these granitoids may be derived from a older earth crust. A lot of acid intrusions occur in Yuexi and are intruded in the North Dabie metamorphic Complex. Theycomprise monzo granite-syen ogranlie, granodion ie -quartz monzo di on ie and alkali granit e. Petrographi caland geochemical study of them indicates they were formed in the post-orogenic regimes. It is worth to to define that an undeformed body of granodiorite-quartz monzodiorite is metaluminous (A / CNK, 0.8-0.9) and exhibits a smaller Eu anomaly (Eu / Sm 0.31). All granitoids in Yuexi district have early Cretaceous of They are plotted as a horizontal zone on εNd, (0) - εSr (0) diagram, indicating these granitoids may be derived from a older earth crust.