To improve a precision of an image-based diagnosis using a medical image such as an X-ray image or the like.

A medical image displaying system 100 displays the medical image such as the X-ray image or the like superposed by (or individually with) a sound source position of a living body sound which is obtained from a photographing position of the above medical image through the first auscultation microphone M-1 to the number n auscultation microphone M-n. Also, the image of the predetermined region including the sound source position is extracted, and the extracted image is enlarged and displayed. Moreover, a type of the sound source of which the position is displayed in the above image is displayed.