Abstract: In view of the modal parameter uncertainty in a high frequency vibro-acoustic problem, the statistical energy analysis parameters are determined and the power flow model is constructed for the solar array sandwich panel with composite face sheets based on the statistic modes and the energy equilibrium. The vibro-acoustic response of the solar array sandwich structure is further obtained, and the analytical results agree well with the test data, which indicates that the vibro-acoustic analysis method is reliable and can be applied to the small satellite engineering. The vibro-acoustic analysis method can also provide a good tool for the dynamics analysis in the small satellite solar array structure development.