Does the subject want to ask, "Who has a stethoscope at home?" A doctor or nurse, a layman.

1. doctors or nurses: doctors or nurses are professional medical personnel who have received systematic medical education and obtained professional qualifications. In clinical work, stethoscope is used to check the audio signals of patients' heart, lungs and other body parts to understand the health status of patients.

2. Non-professionals: People who have stethoscopes at home can also be non-professionals who are interested in medical treatment. Master auscultation technology through self-study or class.