Abstract: An existing brick concrete structure residential building has been identified. The result shows that the vertical bearing capacity and seismic bearing capacity of the wall cannot meet the requirements, so the wall must be strengthened. According to the existing reinforcement codes and methods, the applicability of seismic reinforcement methods of brick masonry wall is compared and analyzed, and it is concluded that UHPC surface reinforcement method can significantly improve the bearing capacity and deformation performance of the wall. By proposing the UHPC mix proportion with plastering workability, the wall surface reinforcement design is carried out, and the construction steps of UHPC strengthening brick masonry wall and the reinforcement structural measures to avoid wall peeling are described. The results show that the compression and seismic bearing capacity of the strengthened brick wall can meet the design requirements and reduce the dead weight of the upper wall.