Usually, physicians diagnose lung diseases by listening to the lung sound using stethoscope. This technique is known as auscultation. Some lung diseases produse unique lung sounds, whice refer to special recogninized pattern. But the main problems conercing are the lung sounds that have low frequency (20 – 2000 Hz), low amplitude, in addition to other factors such as interference from other sounds, ear sentiveness, and low variety of the pattern of lung sounds that make them almost similar. These came factors lead to the false diagnosing of lung disease if the auscultation procedures are not conducted correctly. In this research, we develoved electronic stethoscope which is intergrated with auscultation software. Electronis stethoscope captuted the heart/lung ound and recorded into PC via soundcard and auscultation spftware will display the sound. In the software, we have lung/heart sound database, so we can compare recorded sound with data in databased. Keywords : stethoscope, lungsound, heartsound, auscultation.