The SankuanggouZhuanghuhe area is located in the north of the Duobaoshan metallogenic belt in Heilongjiang Province, NE China. Tectonicmagmatichydrothermal activities in the area are complicated, resulting in the formation of Sankuanggou skarn type deposits and Zhuanghuhe hydrothermal vein deposits. This study investigated geochronological, petrograpic and geochemical characteristics of magmatite rocks in the Sankuanggou and Zhuanghuhe areas. Twoperiod magmatic rocks have been identified: Hercynian rhyolite in Zhuanghuhe (288 Ma~294 Ma) and Hercynian Granite porphyry in Zhuanghuhe (297 Ma~303 Ma), and Yanshanian granite in Sankuanggou (172~179 Ma) and quartz diorite in Zhuanghuhe (165~176 Ma). Oreforming magmatic rocks in the SankuangouZhuanghuhe area are high Si and Al, alkalirich typeI granite, and enrichment of LILEs (such as Rb, Sr, Ba, and K), and depletion of HSFEs (such as Nb, Ta, and Ti), with distinct fractionation of HREE and LREE, and δEu loss. This study suggests that rhyolite and granite porphyry in Zhuanghuhe formed in active continental margin and was the result of subduction of the paleo Asian Ocean in the Hercynian period. The Yanshanian granite in Sankuanggou and quartz diorite in Zhuanghuhe are related to mineralization and enrichment, and the mineralization in the two areas was closely related to the subduction of the paleo Pacific in Yanshanian period.