Abstract: The Polyethylene Terephthalate Fiber Reinforced Polymer (PET FRP) composite is used to strengthen the columns of subway stations, which can significantly improve the lateral deformation capacity of reinforced concrete columns, as well as the overall seismic performance of the subway stations. In this paper, the numerical simulation models of RC columns reinforced by PET FRP with stripe and lateral wrapping schemes, are built and calibrated according to test results. Then the seismic response of subway stations strengthened with the two reinforcement schemes is simulated by using the verified numerical models. The improvement in seismic performance of the structures strengthened with PET FRP is comparatively analyzed from the perspectives of overall lateral deformation capacity and column damage. The results indicate that both reinforcement schemes significantly enhance the lateral deformation capacity and vertical load-carrying capacity of the structure. The limit of reparable inter-story deformation of the structure increases, with the bottom story exhibiting better seismic performance improvement than the upper story. The PET FRP reinforcement does not markedly alter the inter-story deformation response of the subway station, but the enhancement in lateral deformation capacity of the overall structure results in a smaller damage to the structure. The PET FRP reinforcement reduces the damage of columns by at least one degree under strong earthquakes. When PGA_H=0.6g, the damage of columns in the upper story is reduced to Grade I, while the damage of columns in the bottom story is reduced to Grade I ~ II. The comparisons of inter-story deformation capacity and column damage indicate that the lateral wrapping scheme is more effective in improving the overall seismic performance of subway stations.