Abstract: In the process of software reliability demonstration testing there is a problem that traditional Bayesian method did not distinguish between historical information and experimental information.A hybrid Bayesian software reliability demonstration testing scheme is proposed.By introducing the concept of correlation coefficient, the correlation coefficients in hybrid Beta distribution are determined by subjective quantitative method, goodness of fit method, Kullback information method, Spearman correlation coefficient method and Kendall correlation coefficient method respectively.Finally, through experimental analysis, prove the feasibility of the 5 kinds of calculation method of correlation coefficient, and prove that differentiating the historical information and experimental information impacts acceptable quality level of software reliability demonstration testing.