The natural scene simulation is a key technology in the field of virtual reality. Stars, the moon and their mirror images in water are all special natural scenes when pilots flying across the sea. In order to generate a high quality night flying virtual reality system, a particle system was adopted for star simulation, the dynamic twinkling phenomenon of stars was deduced to the concept of particle life, and a dominant algorithm appending random disturbance method was presented for simulating the night sky. An efficient texture blending method was introduced for simulating the moon and the mirror of night sky. The special texture was made up of three steps, such as texture-generating, scene-rendering and graph-blending. The blending gene parameters were confirmed according to light attenuation criterion of reflecting mirror and textures were blended with the background screen using the alpha method. Finally, a high quality virtual reality system of night flying over the sea was implemented.