Abstract: The channel impulse response matrix formula for multiple-input-multiple-output(MIMO) wideband distributed scattering model is derived based on narrowband distributed scattering model and Kronecker model, and random channel matrices in time domain and frequency domain are obtained by using of Monte Carlo methods and discrete Fourier transform respectively to develop a MIMO distributed scattering model for wideband channel. On this basis, the simulation of time-domain fading characteristics for MIMO wideband and time-variation channel is obtained by filtering uncorrelated complex white Gaussian processes. The results in this paper can be used for analysis and evaluation of MIMO wideband mobile communication system performance.