Abstract: Taoling pluton is located in northeast Jiangxi Province in the eastern part of Jiangnan orogen. The pluton is characterized by high potassium calc alkaline series, weakly peraluminous-strongly peraluminous nature, and high Mg^#. Taoling pluton is enriched in LREE and LREE, and depleted in HFSE, with weak negative Eu anomalies(δEu=0.62-0.81)(except for sample TL-1, whose δEu is 0.47). Zircon LA-ICPMS U-Pb dating shows that the pluton intruded at 140±1 Ma. The initial ⁸⁷Sr/⁸⁶Sr ratios and ε_Nd(t)of the pluton are(0.7131-0.7141) and(-7.43--6.71), respectively. Combined with previous studies, the authors hold that the mafic magmas ascended from the metasomatized mantle and heated the lower crust, triggering partial melting of metasedimentary basement in the depth(> 40 km) to form Taoling pluton, with the addition of relatively small amounts of mantle-derived materials.