In this paper, the neodymium isotope composition and source materials of the meta-basement in central Jiangxi have been studied. The Presinian medium-grade metamorphosed sedimentary rocks have lower143Nd/144Nd ratio (0.511827—0.512052) and∈Nd(T) values (-3.60—+1.11) and older model ages (1597—2124 Ma), while the slightly metamorphosed Sinian sedimentary rocks have a bit higher143Nd/144Nd ratios (0.511918—0.512233) and ∈Nd(T) values (-0.320—-0.55) and younger model ages (1360—1405 Ma). The above neodymium isotope characteristics suggest that the Presinian metamorphic sedimentary rocks consist of old continental debris from Huaxia massif and volcanic materials derived from the mantle, being formed in an arc-type environment. The Sinian epimetamorphic sedimentary rocks were formed along the western active margin ofHuaxia paleocontinent, with their rockforming materials derived chiefly from eroded debris of Presinian metamorphic sedimentary rocks and a bit volcanic materials. The above study has provided important isotopic evidence for the argument that meta-basement in central Jiangxi belongs to Huaxia massif.