The Zhonggou area in Liaoning Province is located in the Jiaoliaoji orogenic belt in the north of the North China Craton. There are frequent magmatic activities in the area, and the proterozoic striated granites are widely outcropping in the area. In this paper, the striated granites in Zhonggou area are systematically analyzed from the aspects of petrography and geochemistry, in order to discuss the tectonic setting and petrogenetic significance of this area.The sphene granites are mainly monzonite, in which calcium and mafic amphibole are found, and the accessory minerals are sphene, zircon and magnetite.It belongs to the high-K calc-alkaline calc-alkaline series, and its A/CNK ranges from 1.09 to 1.67, and its A/NK ranges from 1.11 to 2.18. It is a weakly peraluminous rock. The content of SiO2 is 61.91~77.48, rich in alkali (Na2O+K2O=1.78~8.58), high in aluminum (Al2O3=11.57%~19.30%), low in magnesium and calcium (MgO=0.07%~2.79%, CaO=0.19%~2.70%).Relatively high total rare earth (ΣREE = 109.72×10-6 ~320.27×10-6 ), light rare earth fractionation factor (La/Sm)N =2.86 ~ 10.91, the heavy rare earth fractionation factor (Gd/Yb) N = 0.59 ~ 7.97, the Eu is moderate negative anomaly ( δEu = 0.18 ~ 0.75), on the tectonic discrimination diagrams in the active continental margin area, has obvious subduction zone characteristics of magma.Combined with the regional evolution history, the Jiao-Liaoji orogenic belt subducted northward during the Paleoproterozoic.