Abstract: The composite shear wall with double steel plates and infill concrete has advantages of reducing wall thickness and increasing capacity and ductility.In order to study the seismic performance of a composite shear wall with double steel plates and infill concrete under a high axial compression ratio,quasi-static tests on five composite shear walls with double steel plates and infill concrete of the shear span ratio of 1 were conducted.The seismic performance and failure modes were observed under low cyclic lateral loads,and the axial compression ratio and distance to thickness ratio on the seismic performance were analyzed.The results indicate that the failure mode of specimens is the flexural-shear failure.Local buckling occurs when the average displacement angle reaches 1/83,and the form of initial buckling is significantly affected by the distance to thickness ratio of steel plate.The specimen peak load,displacement ductility factor and stiffness are less influenced by axial compression ratio and distance to thickness ratio.The average ultimate displacement angle of the specimens reaches 1/72,and the average effective failure displacement angle is up to 1/52,showing good deformability.The stability of hysteretic behavior of the specimens reduces with the distance to thickness ratio increased.Energy dissipation capacity increases rapidly with the increase of deformation,showing a good seismic performance.The axial compression ratio of a low shear-span ratio composite shear wall with double steel plates and infill concrete is recommended to take 0.7.