Abstract: In order to realize accurate analysis of dynamic characteristics of BCC truss core sandwich plates for the spacecraft, a method for the uncertainty-propagation analysis of dynamic characteristics of BCC truss core sandwich plates using the INR-Kriging method is proposed by considering the effects of uncertainties, based on the deterministic numerical model published by the three-dimensional elastic theory. Classify the hybrid uncertainty in BCC truss core sandwich plates into cognitive uncertainties and random uncertainties, and quantitatively characterize them using fuzzy intervals and fuzzy probabilities, respectively. Adopting the INR method and Kriging method as basic methods for the uncertainty-propagation analysis of fuzzy intervals and fuzzy probabilities, respectively, and comprehensively considering the coupling effect between two methods, an efficient hybrid uncertainty-propagation analysis method is established. The effectiveness of the proposed method in this study is verified by comparing the INR-Kriging results with the results of Monte Carlo simulations and published literature, and then the effects of different uncertainties on uncertain dynamic characteristics of BCC truss core sandwich plates are analyzed. The research findings can provide theoretical references for the design, evaluation and application of uncertain dynamic characteristics of truss core sandwich plates.