In order to solve the problem of the uncertainty of the evaluation index of the missile force combat unit support capability, a set pair evaluation method with multiple connection numbers is proposed. This paper analyzes the influencing factors of the supporting ability of the missile combat unit, establishes the index system of the supporting ability of the missile combat unit, uses the analytic hierarchy process and G1 weighting method to determine the weight of each index, puts forward the steps of the evaluation method based on the multiple connection number set, and analyzes an example of a military combat unit. The research results show that this method can reflect the nonlinear characteristics of the evaluation results dynamically, and has a good guiding role for the evaluation of combat unit support capability of missile forces.