A heart murmur with a stethoscope may be a physiological murmur or a pathologic murmur, and the subject may be able to confirm the diagnosis by completing cardiac ultrasound and other examinations. Generally speaking, soft murmurs with intensity below grade 2 are normal physiological murmurs, while murmurs with high pitch and intensity of grade 3 and above are pathological murmurs. Patients with physiologic murmurs generally have no abnormalities on cardiac ultrasound, while patients with pathologic murmurs have organic structural changes in the heart and heart valves on cardiac ultrasound. Pathologic heart murmurs can be seen in mitral stenosis, mitral valve insufficiency, aortic stenosis, aortic valve insufficiency, tetralogy of Fallot, atrial septal defect, ventricular septal defect, and other diseases. If a heart murmur is detected on auscultation, please follow the doctor’s instructions for follow-up examinations and treatment.