Based on a foundation pit project supported by a combination of anchor and pile supports, a simulation has been made of the excavation process of the foundation pit by using MIDAS GTS NX finite element software. Meanwhile, an exploration and an analysis are made of the influence of changes in the proportion of anchor and pile supports on the deformation of the foundation pit support structure. The research results indicate that as the proportion of pile anchor support increases, the deformation of the support structure and the axial force of the anchor rod gradually increase and tend to stabilize, while the internal support axial force shows a gradually decreasing trend.