Abstract: In this paper,we divide shear-wall structure into several subdomains, then synthetize each subdomain by using two-dimensional single spline functions, Therefere the dynamic characteristics of structure can be obtained easily. It adopts analysis model of continuum-discrete in order to reflect real properties of structures. Due to using cubic B-spline for interpola tion,it overcomes difficulties for treatment of clamped boundary shear condition, The stiffness matrix and mass matrix shown in the paper are band matrices, and coupling problem do not exist at all. The methed proposed in the paper has great advantages over the finire element method, the framed methed and the finire strip method, that is, it is easy to edit computer programmes, saves the numbel of storage and is simple to input data. It can solve complex engineering problem in microcompurers or tmall computers, Calculation shows that it is a powerful and economical method.