Abstract: In paper research on reliability model consist of the software special feature seeing Makeham and extended Weibull distribution that controls the distribution of life from the development of software about performance comparison was planned. Using the finite-failure non-homogeneous poisson process property, the software failure model was planned. Using the maximum likelihood estimation, the parameter estimation scheming was lead. Ultimately, from comparison about the mean value function, extended Weibull distribution model can be realized that the closer to the true value than the Makeham distribution model. As compared to the true value, extended Weibull distribution model was completed overestimation and the Makeham distribution model was completed underestimation. In terms of reliability, Makeham distribution model than extended Weibull distribution displays the high tendency. Thus, in terms of reliability, Makeham distribution model than extended Weibull distribution model can be refereed more trustworthy model in this field.