Aiming at the systematicness and the complexity of the Anti-TBM warhead damage reliability evaluation, the evaluation model based on combination weighting method and cloud theory was established. Paired-comparison method was adopted to define the subject weight, and entropy value method determined the object weight. And the independence weight was determined by the correlation coefficient method to correct the weight, then the cloud model was constructed to evaluate the damage reliability. At the same time, the scientifical-ness and rationality of evaluation results was tested through creditability analysis. The cloud model could realize the fuzzy transformation of qualitative index and quantitative index, the simulation results indicated that the proposed model could effectively evaluate damage reliabili-ty of warhead.