Surface-type infrared decoy has been an effective measure for countering the infrared imaging guidance missile.In order to carry out surface-type infrared decoy simulation in the hardware-in-the-loop simulation,the jamming characteristic of surface-type infrared decoy is analyzed firstly,paving the way for the simulation.Secondly,based on the practical application and engineering requirements,the simulation model of surface-type infrared decoy is given out.At last,the computer simulation images are generated on certain simulation conditions.The simulation result shows that the size,the lightness and the movement of surface-type infrared decoy simulation images are much alike with the practical cases,along with the change of the distance.Therefore,the simulation is of application value.