The parents took their 5-year-old child for a medical checkup at the hospital and accidentally found a heart murmur. The parents were very nervous about this and worried that their child had congenital heart disease, so they rushed to take the child to the hospital for a checkup. The doctor said that there are multiple possibilities for heart murmurs, not necessarily congenital heart disease. After a series of detailed examinations, the child’s heart murmur belongs to the “physiological murmur”, there is nothing wrong with the heart, the parents are finally relieved and at ease. The heart murmur is one of the important signs of congenital heart disease in children. In reality, there are indeed many parents who go to the hospital and diagnose their child with congenital heart disease by first finding their baby’s heart murmur. So, does a heart murmur necessarily mean that the child has congenital heart disease? A heart murmur is one of the criteria for determining congenital heart disease, but not the only one, and not all heart murmurs indicate congenital heart disease. When parents find a heart murmur in their child, they should not panic, they need to interpret this abnormal phenomenon rationally and scientifically, and make the safest disposal plan. 1, identify the type of murmur: clinically, the heart murmur is generally divided into physiological murmur and pathological murmur, congenital heart disease caused by the heart murmur for the pathological murmur. The characteristics of these two kinds of murmurs are still more obvious differences, parents can observe the characteristics of murmurs, to initially determine the category of murmurs. The physiological murmur is mainly caused by the child’s lack of oxygen and reduced blood viscosity, but the child’s heart structure itself is not abnormal, and will generally disappear automatically as the child grows older; while the pathological murmur children generally have shortness of breath, breathing difficulties, poor tolerance of physical activity and other characteristics, mostly accompanied by heart malformations. Pathological murmurs are coarse, loud, and long lasting compared to physiological murmurs. When parents find the child has a heart murmur, should go to the hospital to do a heart auscultation, if it is a physiological murmur, to pay attention to daily nutrition and health care, if it is a pathological murmur, it is necessary to carry out further examination. 2, physiological murmur can not let down your guard: physiological murmur of the baby, there is generally no abnormal flow of blood. Physiological murmur is mostly seen in children over 2 to 3 years old, most often between 3 and 7 years old, with age, organ function is maturing, heart valve function is complete, physiological murmur will disappear naturally. However, if the murmur persists, even after the child goes to school, it is advisable to go to the hospital for a checkup to see if there is an abnormality in the heart structure or blood flow. In addition, a cold, fever, or hyperthyroidism at an early age can also be a cause of a physiological murmur, and these diseases should be treated early and thoroughly. 3, no heart murmur should also be carefully examined: If, after auscultation, no heart murmur is found, excluding the factors of doctor’s level and work error, it can be inferred that the valves and form of the child’s heart are normal and there is no abnormal flow of blood. However, we should not let down our guard and it is better to do an ECG and echocardiogram just in case. When a murmur is found in a child’s heart, parents should not be overly nervous, as this can cause a mental and psychological burden on the child. You should go to the hospital for examination as soon as possible. After the doctor’s hearing, he will soon clearly determine whether it is physiological or pathological; for some that are not easy to clarify, further auxiliary examinations can be done, such as chest X-ray, ECG, cardiac ultrasound, or cardiac catheterization, etc.