As an important organ of the human body, the health of the heart is highly valued, and it is important to have a good heart examination. 2.Cardiac ultrasound Dynamic cardiac examination can show the structure of the heart chambers, the beating of the heart and the state of blood flow in the heart. 3.24-hour ambulatory electrocardiogram requires patients to wear professional instruments for 24-hour testing. Patients’ daily life should be the same as before wearing it, getting up, eating, walking and resting, and every moment of change of ECG signal will be recorded to provide a reliable basis for doctors’ diagnosis and treatment, mainly for patients with serious heart disease. 4.Coronary CTA Coronary CTA is an examination method of coronary artery imaging by using spiral CT (generally 64 rows or above) scan after intravenous injection of contrast agent and then reconstructed by computer processing. It can observe coronary artery stenosis or calcification, etc. 5.Cardiac catheterization This requires a small incision at the wrist or thigh, and a professional catheter is inserted into the patient’s body, along with the blood transported to the heart, to understand the oxygen content and pressure changes in different parts of the heart chambers and large vessels, and more precisely whether there are abnormal shunts and specific parts of the shunts. 6.Myocardial perfusion isotope imaging Myocardial perfusion isotope imaging is a technique to observe the distribution of myocardial blood flow, which can reveal the structure of the heart and its functioning, it is non-invasive, easy to repeat, and the results are accurate and reliable. There are many other cardiac tests that can be performed depending on the specific condition.