The reliability of the brick column underpinning joints is one of the important factors to ensure the safety of building monolithic moving. In order to study the mechanical performance of the brick column underpinning joints in the process of moving, this paper takes a protected building as an example and uses the ABAQUS finite element software to establish the finite element model of the brick column underpinning joints. Through the simulation analysis，the stress and deformation performance of high performance ferrocement laminate（HPFL） reinforced and unreinforced underpinning joints are investigated. Meanwhile， the comparison with field monitoring data are also carried out. The results show that HPFL reinforcement method can effectively improve the bearing capacity and deformation capacity of the brick columns underpinning joints，and the ability of effective resistance under various adverse effects in the process of translation is also proved. The method is safe and reliable. The simulation results are in good agreement with the field monitoring results ，which proves the feasibility of the simulation method.