The examination of patients with inadequate blood supply to the heart can be done in the following ways: First, a relevant medical physical examination should be completed, including heart rate, blood pressure, pulse, oxygen saturation, and a rigorous cardiac physical examination. Next, ancillary tests should be done, by taking blood for cardiac enzyme profile. Then, one should also try to do endocrine-related examinations, such as thyroid function tests, as well as cardiac ultrasound examinations and 24-hour ambulatory electrocardiography. Finally, patients who have the conditions should improve coronary CT and coronary angiography, which can further clarify the vascular diseases that lead to insufficient blood supply to the heart, and it is also recommended to check the cerebrovascular related conditions if the heart supply is insufficient.