In order to improve accuracy of military information quality evaluation, establish an index evaluation model based on entropy weight-set pair analysis method. Based on set pair analysis and information entropy weight, the evaluation model of the quantity of military intelligence is made to enhance its accuracy, according to the characteristics of military intelligence. Then, the method gains the weights of evaluation indexes by calculating the entropy in order to form the optimization matrix. Finally, the optimal intelligence is chosen after the plan candidates being ranked by comparing the degrees of identities. The example shows that it is a practical method which could reduce human factors in the weight calculating.