Abstract: Based on the coexistence of fuzziness and randomness characteristics in the process of complex system comprehension evaluation, a cloud-fuzzy comprehension based evaluation method is proposed for antiaircraft gun automata machine. It gives an approach by weighting and summating the weight from fuzzy comprehension evaluation method and random membership degree from membership cloud. Meanwhile, it establishes the judgment set through the cloud model. This method remains the uncertainty and raises the reliability of evaluation process. Finally, evaluation steps are summarized by an evaluation instance, and the result demonstrates the feasibility of the proposed method.