Major element and trace element contents have been determined for Fuxi granodiorite body and Jiufeng adamellite body in southern Hunan and nor- there Guangdong, and also for such basement strata in Nanling region as Sibao Group, Banxi Group and Sinian-Ordovician rocks. In addition, Sm-Nd isotopic data have been obtained for Fuxi and Jiufeng rock bodies, with isochron ages being 463 Ma and 159 Ma, εNd(t) - 6.8 and -10.4 and tDn} 1728 Ma and 1896 Ma respectively. It is preliminarily concluded that source rocks of these two rock bodies might have been Proterozoic contine}ltal crustal rocks in nature. Trace element quantitative modelling for petrogenesis of thesee rock bodies was carried out with the aid of the formula for batch partial melting, i. e. CL/C0=1[D0(1-P)] The data obtained, combined with the geological and geochemical characteristics, have led the authors to believe that the Fuxi gra- nodiorite, being a product of the crystallization of a melt, was formed by 50% partia.l melting of Sibao Group or similar Lower-Middle Proterozoic rocks, whe- reas the Jiufcng adamellitc by 55% partial melting of Banxi Group or similar racks in the region.