Objectives: The Fuling pluton is a granitic body located in the adjacent area of Anhui and Zhejiang provinces in the eastern section of the Jiangnan orogenic belt. The magmatic rocks are distributed along the Ningguo-Jixi deep fault extending near the NE direction. The research work on the Yulongchuan (γ53 (2) )unit granite in Fuling Pluton has been carried out in this paper. Methods: Based on the field work, we finished microscope observation, whole-rock geochemical analysis, LA-ICP-MS zircon U-Pb dating and in situ Lu-Hf isotope geochemistryfor the Yulongchuan (γ53 (2) ) unit granite. Results: The LA-ICP-MS zircon U-Pb dating shows that the emplaced age of the granite is 131.75±0.91Ma, which is the product of magmatic activity in the late stage of the Jiangnan orogenic belt. The pluton is rich in silica and alkali, and poor in calcium and iron. The characteristics of trace elements show that there are higher Rb, Th, U, Ga, Zr and Y contents, and there are lower Sr , Ba and Nb. The rare earth partition curve presents a typical "seagull" distribution, showing strong negative Eu anomalies. Negative anomalies of Ba, Sr and Nb are found in the primitive normalized mantle spider map of trace elements. The zircon εHf (t) of Fuling granite varies from -7.0 to -4.6, and the two-stage model age (TDM2) ranges from 1478 to 1630Ma. The Th/U values, Th/Nb values and Th/La values are all higher than the average continental crust value, and the La/Nb values is slightly lower than the average continental crust value. Conclusions: The high SiO2 content, Rb/Sr value and low Ba and Sr content show that the Fuling granite has the typical characteristics of the A-type granite in the eastern part of Jiangnan orogenic belt, southern Anhui Province. The Fuling pluton has the characteristics of homologous magmatic evolution, and the separation and crystallization of apatite and ilmenite minerals may exist in the source area, while the separation of pyroxene minerals is less. The source rocks of Fuling pluton are mainly derived from partial melting of mafic rocks in the crust, and their geochemical characteristics are inherited from the source rocks. The Fuling granite may have been formed by partial melting of the ancient lower crust in Mesoproterozoic, and its source material is mainly the ancient lower crust. The positive δEu anomaly of Fuling pluton and the high Sr content of some samples indicate that the magma source is deep. These geochemical characteristics all indicate that the formation of Fuling granite may have been mixed with mantle materials.The formation of Fuling pluton may be influenced by collision. The rock mass was formed in post-collision. Asthenosphere upwelling led to the melting of the subcontinental lithosphere mantle, which produced a large number of new basaltic magma. Thus, Fuling A-type granite is produced.