The simulation of infrared specular reflection is a necessary work to realize the realistic infrared scene.An infrared specular reflection simulation method based on ray tracing and bidirectional reflectance distribution function(BRDF) model was proposed.The method used ray tracing model to determine the main contribution ray in highlight reflection phenomenon,which will reduce the amount of calculation;At the same time,traditional method only uses reflectivity to carry out the simulation,which makes infrared scene lack the realistic.To solve the problem,BRDF was introduced to compute the infrared radiation reflection component,which will enhance the realistic simulation of infrared light phenomenon.The experimental results show that combined ray tracing model with BRDF achieves the unity of realistic and the reducing of calculation,and it provides a new idea for the simulation of infrared specular phenomenon.