■ 64-row CT for noninvasive examination of coronary artery is needed for early detection of coronary artery disease for men older than 40 years old and women older than 45 years old. ■ Patients who usually have angina pectoris, chest tightness but the electrocardiogram is normal, or patients who usually do not have obvious symptoms but the physical examination suggests that there is ischemia of the heart machine, need to carry out 64-row CT for coronary non-invasive examination, except for coronary artery lesions. ■ Patients with obesity, hypertension, hyperlipidemia and diabetes should undergo 64-row CT coronary noninvasive examination as early as possible to understand the damage of coronary vessels. ■ People with a family history of coronary heart disease, usually too eccentric, long-term psychological stress, should be early 64-row CT coronary non-invasive examination, early detection of coronary artery disease. ■ For patients diagnosed with coronary artery disease, but the condition is repeated, the treatment effect is not good patients should be 64-row CT coronary non-invasive examination to understand the coronary artery lesions in detail, for the next step in the treatment to provide the basis for