Aiming at the high failure rate of engine turbine blades in the maintenance of civil aircraft,the reliability data of turbine blades of a certain type of civil aviation engine were collected,and the reliability life model of turbine blades of this type of engine was established by using the three-parameter Weibull distribution.In the numerical calculation process of solving the model,in order to ensure the calculation accuracy of the model,the classical Newton iteration method and the three-parameter correlation coefficient optimization method were used to carry out fitting analysis and calculation of the life data of turbine blades.At the same time,in order to reduce the calculation workload and improve the participation of artificial intelligence in the process of numerical calculation,a calculation program was written based on MATLAB software for the above numerical calculation method.Finally,the calculation results were tested by K-S hypothesis.The results show that:in the reliability analysis of turbine blade life data,the mathematical model established by using Weibull distribution accords with the objective law.At the same time,the effective use of Newton iteration method,three-parameter correlation coefficient optimization method and MATLAB calculation program ensures the accuracy of the calculation results.