In order to study the influence of deep excavation construction for a new subway station on adjacent existing structures, based on the new station named shoucun on qingdao Metro Line 7, by utilizing numerical simulation analysis software FLAC3D, this article examines the influence patterns of deep excavation construction for a new subway station on adjacent existing structures and compares simulated data with actual monitoring data. The results indicate that: 1) both excavation and backfill stages of the deep foundation pit produce some influences to the extent of horizontal displacement and vertical settlement of existing structures, but the horizontal displacement and vertical settlement are within the safe range; 2) the displacement data calculated by numerical simulation is smaller than the actual monitoring data. The results of this article can provide some references for similar projects.