Abstract: In order to solve the safety problem of nuclear shielding workshop under earthquake, the seismic behavior of composite shear walls with double steel plates and filled concrete for shielding workshop needs to be be studied. For this purpose, low cyclic loading tests on 9 1/5 scaled models of composite shear wall were conducted. The characteristics of lateral stiffness, failure mode, and energy dissipation capacity of composite shear wall were studied based on the tests and the influence of several parameters including the thickness of the steel palate, stud space, vertical load, and stiffener were also analyzed based on seismic performance of composite shear walls with double steel plates and filled concrete. It indicates that the thickness of the steel palate, the vertical load and the stiffener all have great effect on seismic performance of composite shear wall, but the stud space has little impact. On the basis of the test, the finite element numerical analysis of specimens was carried out, and the evaluated results show good agreement with the test results. Finally, the research results of the tests were compared with the latest research achievements, and the direction for future experimental design was suggested.