Abstract: The middle reaches of Naling Guole River is located in the western part of Qimantage area in East Kunlun Mountains, where a large number of granites are distributed. The study of the Late Triassic intrusive rocks in this area is of help to understand the Indosinian tectono-magmatic evolution history of the East Kunlun orogenic belt. Petrological, chronological and geochemical analyses of granites in the study area were carried out. The results show that the zircon LA-ICP-MS U-Pb ages of granodiorite and monzogranite porphyry in the study area are (225.7+1) Ma and (213.74+1) Ma respectively, which are the products of late Triassic magmatism. The results of petrogeochemical analysis show that the Late Triassic intrusive rocks in this area belong to the high-K calc-alkaline series. The saturated aluminium index shows that they are meta-aluminous to peraluminous, enriched with large ion lithophile elements such as Rb, Th, K and light rare earth elements, and obviously depleted with high field strength elements such as Nb, P and Ti. Granite is characterized by highly differentiated I-type granite and plate subduction stage. The analysis shows that the magmatite formed in the volcanic arc environment before plate collision.