Some people are concerned about how to listen to the heart with a stethoscope. In fact, the stethoscope is a tool for clinical doctors to determine heart sounds, heart rhythm and frequency abnormalities, or additional heart sounds and murmurs. The main thing that ordinary people take the stethoscope is that the stethoscope should be rotated to the forward direction, that is, the two small buttons placed on the ear should be placed in the forward direction, so that the contact can be better and easy to hear clearly. The head of the stethoscope should be in direct contact with the skin and not separated by a foreign body, so that there will be confusion with the murmur of the foreign body. Mainly listen to the rhythm of the heartbeat, whether the frequency is neat, how many times a minute it can beat, the above are the main concerns of the patient. The rest of the more specialized issues should be examined by a cardiologist at the hospital.