Based on the SAR image of sentinel-1A satellite for the M_S6.9 earthquake incident in Menyuan, Qinghai Province on January 8, 2022, we calculated the coseismic deformation field, and applied SDM program to retrieve the underground static dislocation. The preliminary results are as follows:① The epicenter of the earthquake is located in the center of the deformation map with butterfly shape, and the fracture trace between the lifting plate and the falling plate is obvious. The long of fracture trace is about 24km, with that deformation center is at the intersection of Tolaishan and Lenglongling faults. ② The data from down orbit shows that the shape variable(line of sight, LOS) in the fault area is at least -0.55m(away from the satellite) and at most about 0.68m(close to the satellite);The data from lifting orbit shows that the shape variable(line of sight, LOS) in the fault area is at least about -0.49m(away from the satellite) and at most about 0.42m(close to the satellite). ③ The superposition analysis of the intensity map of the Menyuan M_S6.9 earthquake released by the China Earthquake Administration and the deformation map of the earthquake shows that the coincidence between the intensity map and the deformation map is very high, and there exits an obvious deformation area about 4000km². ④ The maximum amount of underground dislocation is about 3.29m at the depth of 4.75km. The dislocation fracture near the surface is about 30km and the area with obvious fracture on the surface is about 25km, which is basically consistent with the field observation.