A heart murmur can be seen in normal people. The severity of the heart murmur is specified as follows: 1. If the heart murmur is not loud and does not conduct, the condition is likely to be normal and can be left untreated; 2. Congenital heart disease, some patients have congenital heart disease. Such as atrial septal defect, which may be congenital heart disease, may also be a valve lesion. Such as mitral valve, aortic valve stenosis and other valvular lesions may be seen in such as rheumatic heart disease. Now with economic development, the incidence is getting lower and lower, but still; 3, may be related to hypertension. If the patient has hypertension and poor blood pressure control, the blood pressure may have an effect on the valve. There will be calcification of the aortic valve. A heart murmur will be present in that case; 4. The patient has an unusually large heart. When the heart is of normal size, the valve is normal, and when the heart is getting bigger, the middle valve will appear smaller and smaller. The patient in that case will have regurgitation and also murmur, and all of the above are possibilities of murmur. The murmur may be seen in normal people or in congenital heart disease, rheumatic heart disease, hypertensive heart disease, dilated heart disease, etc. Therefore, there is a wide range of murmurs, and it is up to the doctor to determine which specific disease requires a heart ultrasound.