In order to realize the dynamic infrared real-time rending output of aircraft and its tail flame simply, a simplified particle effect model of aircraft plume based on Vega is designed and built. In this paper Vega simulation technology is introduced, and the three key technologies of object modeling, tail flame modeling and temperature transformation are presented in detail. Through reasonable parameter design of Special Effect module in Vega’s Lynx interface, the aircraft plume model is built. Then, aircraft temperature field is simulated by dividing the plane geometry model into regions and giving experiential temperature for each region. For the limitation of quantitative range of infrared radiation, a transformation is used to the target temperature. In the end, the infrared simulation result of aircraft and its tail flame is provided by application program. The result proves that the simulation method in this paper is simple and has high fidelity, and can meet the most requirements of simulation application.