Abstract: Two 1∶3 twoside constraint steel plate shear wall specimens with vertical stiffeners were tested under low cyclic loading to study its seismic performance through the performance indexes of the initial stiffness， hysteretic behavior， loadcarrying capacity， destruction mechanism and so on. Tests results showed that as main lateral force resisting members twoside constraint steel plate shear wall with vertical stiffeners had a very superior seismic performance. In the elastic phase destroyed expected buckling， mainly for the corner plate tearing and buckling failure，the diagonal direction formed apparent tension band can be observed in the steel plate wall destroyed later. So it is worth popularizing in the area of high seismic intensity.

Key words: twoside constraints, vertically stiffened, steel plate shear wall, seismic behavior