Jigongshan granite is an important batholith in Tongbai-Dabie orogenic belt. In order to discuss the petrogenesis and dynamic background of the Jigongshan granite and guide regional prospecting, this paper has carried out zircon U-Pb dating, rock geochemistry and Sr-Nd-Hf isotope studies on the Jigongshan granite. The results show that the pluton is a paraaluminous-weak peraluminous granite, belonging to the high-potassium calc-alkaline series and fractionated I-type granite, accessory mineral includes minor hornblende. Zircon U-Pb dating shows that the age of the Jigongshan pluton is 141.8 ±0.8 Ma (n=26, MSWD=1.15), indicating that the Jigongshan pluton was formed in the Early Cretaceous. The (⁸⁷Sr/⁸⁶Sr)_i, εNd (t) values and the two stage model age of whole rock are 0.707 75～0.708 18, -19.21～-17.63 and 2.49～2.36 Ga, respectively. The ¹⁷⁶Hf/¹⁷⁷Hf, εHf (t) values and the two stage model age of zircon are 0.281 845～0.282 083, -29.67～-21.31 and 3.07～2.54 Ga, respectively. Sr-Nd-Hf isotopic characteristics suggest that the Jigongshan pluton may be formed by the remelting of Neoarchean middle-lower crust of the Yangtze plate. The granite has high (La/Yb)_N, Sr/Y values, and inapparent Eu negative anomalies, similar to the adakite-type granite in the Dabie Mountains. The granite formed in extensional structure, as the product of partial melting of the thickened lower crust that has not yet been delaminated. Jigongshan pluton may be the parent granite of pegmatite vein in the pluton.