Detailed and accurate combustion kinetic models will help us understand combustion processes in more depth,and further improve combustion efficiency and reduce harmful emissions.With continuous advances in theoretical and experimental methods and computer science,more and more detailed chemical kinetic models have been developed.However,uncertainties always exist in the models,and a complete and accurate chemical kinetic model probably never exist[1].In order to improve the confidence in model,we need to quantitatively estimate and reduce the uncertainty of model predictions.