Abstract: The Akebulake plutons, outcropped in Qingeli River in Qinghe County of southern margin of Altay orogenic belt, are mainly granodiorite. LA-ICP-MS zircon U-Pb indicates that the plutons were formed in the early Devonian (397.6±5.2Ma), which is a large scale magmatic event in the Altay orogenic belt in Devonian. The SiO₂ contents range from 69.17% to 74.70% and A/CNK from 0.97 to 1.09, indicating that the plutons are metaluminou, mid-high K calc-alkaline series rock. In addition, the plutons are enriched in K, Rb, Th, La, Ce and Nd, obvious negative anomaly in Ba, Nb, Ta, Ti, Sr and Eu (δEu=0.58-1.23), which are consistant with the characteristics of granitoid rocks formed in island-arc. Based on the previous studies, this paper suggests that the Akebulake plutons were generated from the tectonic environments of continental margin arc by the subduction of the Paleo-Asian Ocean plate. Dark-coloured inclusion bodies in the rocks and the geochemical properties suggest that the plutons are the mixing and differentiation of the mantle magma melting the lower crust.