The auto-PSD function analytic solutions of interstorey drift and storey shearing force of multi-storey and high building structural storey model are derived on the basis of pseudo-excitation algorithm.The auto-PSD function moments and standard deviation of interstorey drift and storey shearing force are calculated by numerical integral method.Supposed that the number of random dynamic response passing safe limitation is poison process or two states Markov process,the dynamic reliabilities of interstorey drift and storey shearing force are achieved by the computation program made with the Matlab language. The numerical results indicate that the approach is efficient and effective.