Heart disease needs to be analyzed on the basis of medical history, clinical symptoms and signs, laboratory tests and instrumentation, etc., and different clinical types of heart disease require different tests, so there is no such thing as the “most accurate”. Heart disease refers to a group of circulatory diseases that affect the normal functioning of the heart, including heart failure, arrhythmia, coronary artery disease, pericardial disease, myocardial disease, and some heart valve disease, etc. For different types of heart disease, the test methods chosen will be different. Doctors need to consider the program based on the patient’s medical history, symptoms and signs, including cardiac auscultation, palpation, percussion, blood pressure measurement, electrocardiogram, X-ray, CT, MRI, echocardiogram, cardiac and angiography, and serum myocardial markers tests to further clarify the diagnosis. Diagnosis of heart disease cannot be based on one examination data alone, but often requires a combination of several information; if a patient experiences cardiac discomfort, he or she should consult a doctor for targeted examination and treatment.