Abstract: In order to meet the operational requirements of modern informational naval combat and the objectives of carrying out diversified military missions, the evaluation method of naval vessel's cooperative engagement capability based on the catastrophe progression method is proposed. The method is based on the requirements of cooperative engagement in warship formations and basic principles and arithmetic processes of catastrophe theories. According to catastrophe theories, an integrated indicator system is established, with factors affecting cooperative engagement capability as well as their catastrophe types being analyzed. The evaluation results are obtained after non-dimension alization of preliminary data and comprehensive quantitative calculation. Finally, the method is applied to the evaluation of several ships' combat effectiveness, and the results are proved to be true and accurate, which provides a new perspective for the evaluation of naval vessel's cooperative engagement capability.