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In order solve the problem of operational effectiveness evaluation in the flight test ofmilitary aircraft in the stage of operational test and evaluation, a method of operational test design based on DoDAF is proposed, and a method of operational scenario design based on component and time series desription of combat behavior is designed, which forms a component library of operational test scenario of military aircraft. A special software is designed and developed to realize the mapping of operational effectiveness to equipment indexes. Firing and task-oriented integrated flight test, a quantitative evaluation method of military aircraft operational effectiveness based on five-step method is proposed, which solves the problem of quantitative evaluation of military aircraft operational effectiveness.