Abstract: In order to analyze the influence of foundation pit excavation method on foundation pit and surrounding environment during foundation pit excavation, a large foundation pit in Xiong’an New Area is taken as the research background. Through three-dimensional finite element calculation, the ground settlement deformation around the foundation pit, the deformation of the retaining structure and the vertical uplift deformation of the foundation pit bottom are compared and analyzed when the integral excavation and the partition stepped excavation are adopted. The results show that compared with the integral excavation, the partition stepped excavation can appropriately reduce the ground settlement around the foundation pit. The closer it is to the corner of the pit, the more effective it is to reduce the deformation of the retaining structure by partition stepped excavation. The advantages of partition stepped excavation in reducing the vertical uplift deformation of foundation pit bottom are obvious. The research results can provide reference for practical construction.