Heart murmurs in children include physiologic and pathologic murmurs, physiologic murmurs can disappear with age, and pathologic murmurs may be caused by heart disease and other factors. Physiological murmur is more common in early childhood, is the normal sound of the heart, after puberty, simple murmur will generally subside, if there are certain systemic diseases such as fever, hyperthyroidism, there will be metabolic increase, hemodynamic enhancement, heart murmur enhancement, to be controlled by the primary disease, the symptoms can be relieved. Pathological murmurs mainly refer to heart disease such as ventricular septal defects, arterial catheterization or some complex malformations leading to heart murmurs, which require prompt treatment. Children’s heart murmur may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or therapy.