Sonic tool maintenace and testing of electronic circut need the acoustic wave signal that the sound system probes supply,but as the abnormal signal caused by the degrees of coupling in the sink and in cased well of the sound system ,so the testing work will encount some influence.To solve this problem,this artile designs a set of electonic simulation sound system which can link sound electronic circut directly ,this system can make four wave signals under the action of the pulse producing by the sound,the jet lag of the wave signal and the first wave parameters such as amplitude can realtime display, and which can make precise adjustment by the keys. The experiment test and practical application show that each metric of the simulation sound system meets the design requirements. The system is small size and simple operation ,so it is very suitable for the scene and the use of various.