In order to deepen the exploration of equipment operational effectiveness evaluation method,taking an air defense missile weapon system as the evaluation object,based on the ADC (availability dependability capacity) effectiveness evaluation model,the real combat elements are integrated into the model from four aspects of weapon system combat process,human factors,target characteristics and confrontation environment.The example shows that the operational effectiveness of the air defense missile weapon system under certain environment condition and mission background is evaluated comprehensively,reasonably and accurately through the real combat-like improvement of the evaluation model.