Since infrared detection and guidance technologies are more widely used in the modern war, how to generate the infrared images of battlefield environment in real time becomes very important. A visible flying scene is constructed by using Visual C 6.0 and OpenGL. The infrared radiation characteristics of the target and background models in the scene are analyzed mainly on the basis of the theory about infrared radiation. The infrared radiation intensity of each part of the models is calculated. At the same time, the effect of atmospheric attenuation is analyzed by using LOWTRAN7 and a real-time dynamic infrared flying scene simulation system is constructed through grey level quantization and OpenGL's rendering. The experimental result shows that the system can generate the infrared images of flying targets in different infrared wavebands in different atmospheric environment.