The row echelon granite aplite veined belt extending over one hundred kilometers are developed between the Kunlun Mountain Pass-Gander fault and the Bayan Haran central fault in northern Tibetan Plateau, and most of them are NW-trending, with a few being SN-trending. Based on an analysis of the macroscopic and microscopic characteristics of the row echelon granite aplite veins, as well as the LA-ICP-MS zircon U-Pb dating data for the SN-trending(224.7±0.64 Ma) and NW-trending(220.5±1.1 Ma) granite aplite veins, it is considered that the granite aplite veins are the products of Indosinian Movement, and they were formed in the oblique subduction of the Hoh Xil-Bayan Har terrane beneath the East Kunlun terrane in early Indosinian. The syntectonic granite aplite veins were injected along the "X" conjugate shear joints in the NW(118°) and the SN(2°) direction in the footwall (south section) of the Kunlun Mountain Pass-Gander overthrust fault. The principal compressive stress direction is revealed by the distribution direction of two groups of "X" type conjugate shear joints, which is NW(118°) to the SN(2°). The left order row echelon joints suggest that they are controlled by dextral strike-slip. The earliest formation time of granite aplite veins(224.7±0.64 Ma)represents the time of subduction and strike-slip event, which is also the formation time of the Kunlun Mountain Pass-Gander fault.