Abstract: In this paper an appropriate program,based on the principle of the image moded method is proposed.Principally,with some simplification of the room shape,the sound energy impulse response between the sound source and the receiver which is placed anywhere in the room can be got by using this program.The other room acoustical parameters such as reverberation time-at the receiving position can also be got from the simulation.The simulationalpicture of the im-pulce response is in agreement with the result obtained by measurement in sith.The effectiveness-of the room shape and the distribution of the absorptive material on the sound response between the receiving point and the source have also preliminary been studied by simulation.