Based on the evaluation technology of multi-value about invulnerability, the invulnerability of the communication networks is evaluated in the view of battle. First, an evaluation model is built. In the model, some invulnerable indexes about which the clients are concerned are selected. The variation can incarnate the fluctuation of individuals. Second, the strategy of attacking vertexes, which has been used in many articles, is not adopted. But the more practical strategy is that the vertex which emerges most frequently in paths is searched and attacked. Finally an example of network is analyzed by using the model, the analysis result shows that the model can be used to evaluate the invulnerability of the communication networks and tell that which part of the network structure needs optimization.