Threat assessment and firepower distribution strikes are important links in the decision-making process. The complexity and uncertainty of battlefield environmental factors make existing threat assessment algorithms not comprehensive enough to consider the threat degree calculations, which is difficult to effectively support firepower strike decision Link. Therefore, a multi-air threat factor model that considers, flight altitude, air attitude, travel speed, and number of carried bombs is proposed in this paper. Based on this model, a firepower coordinated strike strategy is obtained.The method in this paper is used to calculate the optimal coordinated strike strategy of the firepower system in an arbitrary environment. Compared with the classical particle swarm optimization algorithm through simulation, the algorithm in this paper can converge faster, which verifies the effectiveness and reliability of the method.