The Qianjinchang batholith is characterized geochemically by Peraluminous nature, enrichmoent in LREE and possession of a medium negativc Eu anomaly.It contains a lot of xenoliths of sedimentary rocks and its emplacement resulted in very wide aureole in the host rocks.These characteristics combined with regional tectonic analysis demonstrate that the batholith was formed by partial melting of sediments during the collison stage in Late Carboniferous.