<p>The kill network contains numerous combat elements, intricate and diverse correlation relations, and the completion of the combat mission of the kill network requires close cooperation between nodes, which highlights the importance of interconnection and combat support between nodes. To address the issue of assessing mission effectiveness within the kill network, firstly, a network-based kill net model is constructed, and the cooperative mechanism of sensing nodes, charging nodes, and supporting nodes is deeply analyzed. A four-dimensional cooperative modeling framework, including the Perception-Command and Control Relationship Link model, the Command and Control-Attack Relationship Link model, the target-attack Relationship Link model, and the Support-Combat Relationship Link model, is proposed, which breaks through the limitation of only considering intelligence and charging coordination in traditional research. On this basis, the depth-first search algorithm is used to find the effective kill chain, and a kill chain efficiency evaluation model based on link coordination is constructed. A static kill net mission performance evaluation model is established, and a dynamic kill net mission performance evaluation model is constructed by using the cloud model method, which realizes the dynamic and static evaluation of the kill net effectiveness. Finally, a task kill net is taken as an example to verify the simulation, and the influence of various node element capabilities on the mission task efficiency is analyzed by calculating the efficiency change and drawing the efficiency curve. The results show that the proposed method is effective and is of great significance for in-depth understanding and mastering of the killing net.</p>