In order to evaluate the operational effectiveness of the air-borne buoy submarine reconnaissance system properly, the model for the air-borne buoy submarine reconnaissance system submarine reconnaissance effectiveness is established. By the way of the WSEIAC model, the guide lines is quantified, and the equation for the air-borne buoy submarine reconnaissance system submarine reconnaissance effectiveness is deduced. The way treating the buoy array as a subsystem and considering its survival rate makes the model correspond to the tactics reality; the way marking off the reconnaissance process as the maintenance stage and the task stage, considering their maintainability, makes the model correspond to the supportability reality. The simulation result shows its validity. This method offers the decision basis for development, improvement and combat of this kind of equipments.