We used the vertical component of data from 62 flow stations recording continuous background noise to determine the possible interaction of surface-wave-related functions and Rayleigh-wave-phase velocity dispersion curves in southeastern Gansu (32.2°~33.5°N, 102.7°~105.5°E). We used the ray-tracing surface-wave-dispersion direct inversion method for five observation stations within a 20-km shear wave velocity distribution image depth range. The results show that there is a correlation between shear wave velocity corresponding to a 5-km depth and lateral variations in the thickness distribution of the deposited layer in the surface fault zone. In addition, the northern West Qinling fault zone is mostly a low-speed zone. Also, the Zhangxian and Lintao Basins belong to one type of characterization of the deposited thick layer (the last a few kilometres). About a 10-km depth corresponds to the shear wave velocity in the south margin fault of Lingbei Xiqin. The Lintan-Dangchang fault in the Lixian-Luojiabao area is between the low-fracture velocity zone, with light covered mountains-stacked high speed around the Northern Piedmont fault zone. There is a block structure of high and low rendering features near the Diebu-Bailong River Ling fault at about a 15-km depth. At about a 10~18-km depth range, the speed gradually increases with depth and the magnitude of the change is about 0.2 km/s.