On the basis of the displacement calculation of the frame-shear wall structure and by considering the shear deformation of the multi-ribbed composite wall,the differential equations of horizontal displacement of the frame-composite shear wall structure respectively under reverse triangle load,uniform load and top concentrated load are established,and the analytical solutions to the equations are obtained.Then,a case analysis is performed with a 12-layer frame-composite shear wall structure.It is found that the shear deformation of the structure is an important component of the total deformation,so that it should be taken into consideration in the displacement calculation of the frame-composite shear wall structure.Moreover,by comparing such mechanical properties as displacement and stiffness between the frame-composite shear wall structure and the common frame-shear wall structure,it is found that（1） shear and bending deformations are two main components of the total displacements of the two structures,and the proportion of shear deformation to the total displacement varies with the structure type;（2） the composite wall is a kind of bearing member with alterable stiffness and damping;and（3） the frame of the frame-composite shear wall structure is dangerous when the floor displacement angle reaches 1/250.