Surface source infrared decoy regarded as an active interference type infrared countermeasure equipment, compared with traditional infrared decoy, has obvious superiority in motion characteristics, jamming effectiveness and so on. Considering the economy of cost and evaluate efficiency, a kind thought which could simulate the testing work based on air confrontation examples was proposed. Firstly, the missile motion model, tracking optimization algorithm and anti-jamming recognition algorithm were established. Secondly, the infrared radiation characteristics of the aircraft skin was focused. Then the motion model of decoy foil was built and the combustion algorithm was optimized. Finally, through changing factors, such as the launch angle, height and speed of decoy, jamming effectiveness was tested. The simulated result is close to real data, verifying the effectiveness evaluation thought is feasible and basically meeting the demand of evaluating.