///In this paper, seven granitoid plutons in the Chinese South Tianshan orogenic belt were chosen for geochronological, petrological, and geochemical investigations. The Yingmailai and Chuanwulu plutons formed in a transition stage of tectonic regimes from syn-collisional compression to post-collisional extension. A-type granites forming at ~275 Ma represents a high temperature granitic magma, which resulted from the interaction between asthenosphere and lower crust under a condition of low pressures. The Baleigong pluton is A₂-type granite representing the epilogue of the post-collisional setting. The Huoshibulake and Mazhashan plutons, however, are A₁-type granite indicative of intra-plate rifting regime.