Abstract:The horizontal velocity field of the northeastern QinghaiTibet plateau is acquired by using the GPS data observed between 2011 and 2013.The current crustal movement in the northeastern margin of the Tibetan plateau is consistent with the long term motion.The north Qilianshan fault is experiencing the deformation of contraction and leftlateral shear,and the shortening rate is larger than the strike slip rate.The horizontal shortening rate of west part of north Qilianshan fault is larger than that of the east part.The GPS velocity profile across the west part of north Qilianshan fault shows that the strain is accumulating while the underneath of this fault is locking.The profile perpendicular to the Liupanshan fault demonstrates that the shortening is distributed at the west of Liupanshan with a range of 300 km.There is no differential movement in the vicinity of both sides of Liupanshan.Therefore,Liupanshan fault is locked deeply.The profile parallel to DiebuBailongjiang fault and west Qinling shows that there is a strikeslip deformation gradient between them.LinxiaTanchang fault is located at this gradient and the shear strain is accumulating.The 2013 Minxian Ms 6.6 earthquake might be associated with this elastic strain accumulation due to locking.The tectonic motion of Longmenshan fault and surrounding area has been basically restored to horizontal movement before the 2008 Wenchuan earthquake.