Abstract: The Hepeng intrusion, located in the Hepeng area in the eastern section of North Huaiyang, consists mainly of porphyritic fine-grained biotite-feldspar granite. It has high SiO₂ and alkali contents, belonging to the metaluminous alkaline rock series. The Hepeng intrusion is characterized by medium REE content, high La_N/Yb_N and LREE/HREE ratios, distinct HREE depletion relative to LREE, weak negative Eu anomalies and weaker negative Ce anomalies, and distinct fractionation of LREE relative to that of HREE, indicating it belongs to a LREE-enriched terrane. Large-ion lithophile elements(LILE), such as Rb, Ba and K, and high field strength element(HFSE), such as Th, U, Ce, Zr and Hf, are significantly enriched, while Nb, Ta, Sr, Ti and P are depleted. LA-ICP-MS zircon U-Pb dating yields a ²⁰⁶Pb/²³⁸U age(128.6+2.1 Ma)for the Hepeng intrusion, indicating the diagenetic age of the Hepeng intrusion is in late Yanshanian and the Hepeng intrusion was the product of the Early Cretaceous magmatic activity. Geochemical characteristics of major and trace elements show that the Hepeng intrusion belongs to the anorogenic A-type granites and formed in extensional tectonic environment at late Yanshanian period.