Addressing the issue that there is no standard evaluation system for the effectiveness of infrared deception jamming against false targets, the visual saliency model is employed to determine the contrast between the real target and the false target under the same background, and quantitatively assess the effectiveness of infrared deception jamming against false targets. The effectiveness of the false target's infrared deception jamming effect increases with decreasing value. The experimental results demonstrate that the evaluation method can not only quantitatively reflect the infrared deception jamming effectiveness of a single false target, but also differentiate the infrared deception jamming effectiveness of various types of false targets, and has strong universality.