Abstract: In the reinforced concrete shear wall structure and frame-shear wall structure,the story sidesway stiffness of shear wall is complex,it is relative to story height of structure and flexure rigidity of shear wall,and also to disribution type of horizontal forces acting on the shear wall.The main feature is that the sidesway stiffness of first story is the greatest,and along the height of structure the sidesway stiffnesses are reduced story by story.In design practice,concrete analysis must be conducted according to the concrete structure and horizontal forces.