Abstract: A stethoscope according to exemplary embodiments of the inventive concept includes a chestpiece for auscultating a patient, a first headset unit enabling a doctor to listen to auscultation sound auscultated by the chestpiece, a second headset unit enabling a patient to listen to the auscultation sound, and a connection unit for connecting the chestpiece, the first headset unit, and the second headset unit with each other and guiding the auscultation sound to the first headset unit and the second headset unit. Such the structure enables for a patient to listen to the auscultation sound as well as for a doctor.