The pile foundation underpinning of the urban overpass will inevitably have a greater impact on the settlement deformation of the abutment foundation. This paper relies on the bridge pile foundation underpinning of F-channel of Huanghe Road overpass in Zhengzhou City, and uses ABAQUS finite element software to establish a three-dimensional solid finite element model of active underpinning structure. Through the numerical simulation, the influence law of the active underpinning process on the new and old foundation settlement of the overpass abutment is obtained, and compared with the on-site monitoring data, the simulation results are basically consistent with the on-site monitoring data. The analysis results show that the maximum position of settlement is in the southwest direction of the middle of the supporting beam, and the monitoring of the location of this area should be strengthened. The displacement control of the whole process is good, and subsequent construction can be carried out after stabilization. The research results in this paper can provide reference and reference for the design and construction of similar pile foundation underpinning projects.