In order to simulate infrared feature of the scene and infrared high light phenomenon, the visual illumination model in computer graphics is improved according to the principle of infrared imaging, the visual Blinn-Phong model is improved and remodeled into an infrared illumination model by introducing self radiation, considering the energy transfer between radiation sources and the object surface in the scene, and making the imaging effect of the object surface conform with corresponding law. In the aspect of realizing simulation, a new radiation energy computing method of the reflection area is proposed to simulate infrared high light effect based on the geometry features of the target. The reflection area is determined according to the target geometry, then infrared high light effect of the target is simulated by computing total energy which is calculated by the information of self-radiance of the incidence point, diffuse reflection rate and specular reflection rate of the material, and normal vector of the reflection point, the position and orientation of the detector and so on. It shows the validation of infrared illumination model and the simulation method of high light effect.