Abstract: The uncertainty of residual strength evaluation models for corroded pipelines was evaluated and analyzed by full-probabilitstic mathematical method. 237 groups of residual strength test data of corroded pipelines were investigated and counted, the model factor (ε) was defined, and the model factors of four common residual strength models for corroded pipeline were calculated based on the test data. A multiple regression equation (f) for the theoretical model parameters of the residual strength of corroded pipelines was obtained based on the experimental data, and the f was used instead of the ε to optimize the formula for the residual strength model of corroded pipelines. The results show that the model factors were correlated with the parameters of the residual strength formula for corroded pipelines. The values predicted through the residual strength formula for corroded pipelines after correction were closer to the experimental values. The full-probabilistic method is suitable for correcting the residual strength evaluation model of corroded pipelines, solving the uncertainty problem and providing a theoretical analysis method for evaluating and optimizing residual strength evaluation models of corroded pipelines.