Without enough measured data of channel statistics,studies on broadband satellite mobile channel modeling are still in the phase of exploring both at home and abroad.This paper analyzed the reasons of selective fading along broadband satellite mobile channel in time domain and frequency domain,and created a phase variable simulation model of wideband satellite mobile channel according to the multiple-point scattering theory.Verified with the statistics of the measured data from German Aerospace Center(DLR),under three kinds of typical environments,the model is proved to simulate the real transmission environment well.