The sortie generation rate of military aircraft is a significant parameter to evaluate the dispatched ability. This article, taking the coefficient of utilization and the cost of support equipment as constraint conditions, and taking the aircraft sortie generation rate as objective function, establishes a MonteCarlo queuing simulation model. The article utilizes the numerical values of objective function through MonteCarlo simulation, and then optimizes the configuration projections of support equipment in applying the genetic algorithm to satisfy the constraint conditions maximizing the sortie generation rate. The article analyzes the sensitivity of sortie generation rate of aircraft, and obtains a curve line about allocation proportion of support equipment of influencing on the sortie generation rate.