During the warfare process, a number of nodes obtained a large number of target parameters. It had great significance that how to implement target assignment for the best attack effectiveness of the entire weapon system. The analysis of factors affecting the attack effectiveness combing the target parameters and the node's state parameters showed that the decision-making in multi-nodes attack is essentially a problem of multiple criteria decision-making. In this paper, the hierarchical structure model of the decision-making in multi-nodes attack was established and complex decision-making problems was converted into simple pair-wise comparisons between the factors in the different layers by utilizing AHP methods. The effectiveness of this scheme was verified with examples. It provides a reference scheme for decision-making problems in multi-nodes attack.