Particle systems are an effective way for visualizing ldquofuzzyrdquo objects in a variety of context and the simulation of flame spreading is very useful in the combustion research of ceramic roller kiln. This paper has presented a visual model of particle system for simulating flame, and introduced a turbulent flow model which can impact the flame spreading. According to this model, the flame spreading, turbulence and temperature field of ceramic roller kiln were simulated, it is better to understand the combustion of ceramic roller kiln. To strengthen the effect of three-dimensional visual simulation, the mechanism of particle collision and detection was provided, particle blending, texture mapping, and other techniques in computer graphics were also employed. It's shown that this visual model was feasible and high performance.