Abstract: Based on equivalent three-strip model and nonlinear static analysis procedure，the static pushover analysis of the three-span steel frame-steel plate shear walls was made by using SAP 2000． Under lateral loads，the loaddisplacement curve，storey drift，plastic development and the internal shear force distribution of the said structure were analyzed． The seismic behavior of the steel shear wall systems with rigid connection and semi-rigid connection was researched． The results indicate that the steel shear wall bears approximately 50% floor shear when the structure is in the elastic stage，and the shear wall bears 70% ～ 80% floor shear when the structure is in the elastic-plastic state． The steel plate shear wall first yields，and then the plastic hinges appear at steel beam end，finally some plastic hinges form at a few steel column end． So the steel shear wall systems have multiple seismic-proof line，showing excellent seismic behavior．