A cardiac ultrasound can certainly check heart function. Cardiac ultrasound is also known as cardiac ultrasound or echocardiography. Cardiac ultrasound can dynamically observe whether the structure and function of the heart are normal in terms of size and hypertrophy. Cardiac ultrasound can help to diagnose various congenital heart diseases, heart valve disease, heart failure and so on. Cardiac ultrasound is not only convenient, but also non-invasive, non-radiation, no adverse reactions. Therefore, pregnant women can also apply for this examination. For ordinary people, cardiac ultrasound can also be used as one of the normal physical examination programs. Patients with heart disease need to have their heart function rechecked by cardiac ultrasound. If the results of cardiac ultrasound are abnormal, the patient should go to a professional hospital in time to avoid delaying the condition.