Aiming at the problem that the weight of evaluation index is unknown and the weight of evaluation expert is unknown, an evaluation index system is established from the perspective of operational elements. The entropy weight method is used to obtain the weight information of evaluation indexes and experts. On the basis of the traditional vlse kriterijumska optimizacija i kompromisno resenje (VIKOR) idea, combined with the calculation rule of intuitionistic fuzzy number, the intuitionistic fuzzy weighted average operator (IFWA) is used to integrate the evaluation results of multiple experts, and then ranks the combat capability of each synthetic battalion, and compares the results with the results obtained by TOPSIS method. The results show that the model is reliable, accurate and stable.