Kayakedengtage complex, located in southeastern Qimantage Mountain of the East Kunlun Mountains, consists of gabbro, diorite, quartz diorite, granodiorite, adamellite and syenogranite which are products of a typical magmatic mixing process. The SHRIMP dating of gabbro and adamellite samples yielded magmatic ages of 403.3±7.2 Ma and 394±13 Ma and inherited zircon age of 1116Ma. The morphological features of zircons from gabbro and adamellite indicate that the zircon crystallization temperatures of these two rocks are 850～900℃ and 600～850℃, respectively, which implies the formation depth of the complex. The dating results provide important data for the evolutionary history of the EastKunlun orogenic belt.