///The Laoniushan complex granitic batholith occurs in Xiaoqinling orogen along the southern margin of the North China Craton. Zircon LA-ICP-MS U-Pb dating yields an age of (207.9±0.72) Ma for the Kangping pluton. These granites are characterized by metaluminous, high silica and total alkalinity with high FeO * /(FeO * +MgO) ratios, LILEs (especially Sr and Ba) and LREEs, low HREEs and Y contents, and insignificant Eu anomalies, similar to the high Ba-Sr granites. Element and isotope compositions suggest that the sources of the Kangping granites in Laoniushan complex batholith are the mixture of the ancient basement materials of Taihua Group and small amounts of enriched lithospheric mantle metasomatised by fluid/melt that was derived from pelagic sediments-bearing subducted slab.