The Zhongshangou Au deposit, located in the west section of the Shuiquangou alkaline complex, northern Hebei Province, is a vein-type mineralization and is obviously controlled by near E-W trending regional deep faults. This paper summarizes the study on geochronology and geochemistry of the main intrusive rocks from the Zhongshangou Au deposit. LA-MC-ICP-MS zircon U-Pb dating yielded a concordia age of (390±2)Ma (MSWD =0.026) and (392±3)Ma (MSWD=0.016) for fresh and altered amphibolite monzonite, respectively, indicating the emplacement age of the intrusive rocks is constrained in Early Devonian. The whole rock geochemistry show that the intrusive rocks from the Zhongshangou Au deposit are characterized by high SiO₂, alkali-rich,meta-/ per-aluminum, which belongs to calc-alkaline A2-type granite, characterized by LREE and LILE (large ion lithophile elements) enrichment, HFSE (e.g. Nb, Ta, Hf), HREE and radioactive elements (Th, U) depletion and Ti slight depletion, accompanied by slight negative or weak positive Eu anomaly. The source area of the intrusive rocks may be old (Archean Sanggan Group), and may be eclogite or hornblende eclogite facies, contains a certain amount of enriched mantle material. The geochronological and petrological characteristics indicate that the emplacement of alkaline magma may be the product of extension after the collision between the Siberian Plate and a micro-blak of the North China Craton, and it is the product of magmatic activity under the regional extensional setting.