An evaluation level of the integrated combat scheme is determined on the basis of analyzing the relationship and capability influencing factors based on air and missile defense in integrated operation, constructing an index system for integrated operation capability, considering the uncertainty of experts' judgment information on evaluation objects comprehensively, applying intuitive fuzzy entropy to the index weights and expert weights, and utilizing triangular whitening function for evaluating grey clustering to indexes at different levels. The feasibility and scientism of the intuitive fuzzy entropy valuation method are verified by the example. The evaluation results can provide the auxiliary decision support for the integrated operation plan.