A stethoscope according to exemplary embodiments of the inventive concept includes a chestpiece, a first connecting tube connected to the chest piece, ear pieces for a doctor connected to the first connecting tube for listening to the sound transmitted from the chestpiece, a sound collecting plate for transmitting the doctor's sound to a patient, a second connecting tube connected to the sound collecting plate, and ear pieces for a patient connected to the second connecting tube for transmitting the doctor's sound to the patient.