Aiming at the complex structure characteristics of the battlefield network, the individual attributes and network attributes of the combat unit are analyzed, and a similarity calculation method is proposed to create a battlefield network model based on node similarity. By calculating the similarity values among combat units and solving the order of the importance of battlefield network links, a battlefield network attack strategy based on node similarity is proposed to provide auxiliary decision-making support for battlefield commanders. Finally, based on simulation example data, the attack strategy based on node similarity is compared with the attack strategy based on edge betweenness and degree product. The experiment shows that the proposed attack strategy is effective and practical.