Abstract We arrange AA′ surveying line composed of circular arrays observation system and BB′ surveying line composed of linear arrays observation system, respectively, in the south and north of the proposed Linxia airport terminal in Gansu province. The results reveal that each layer is clearly visible and nearly horizontal by 2D AA′ apparent S-wave velocity profile. Geological prospecting data in relevant areas shows that the thickness of Quaternary overburden represented by loess layer is about 120 m, and the buried depth of complete bedrock surface is about 170 m. The BB′ profile shows that the inverted stratigraphic structure inclines to the south, which may be related to the layout structure of the linear arrays. Both profiles show that the continuity of each layer is good without obvious dislocation, and there should be no hidden faults and other adverse geological bodies in the site.