CTA can be used to detect coronary artery disease, but attention should be paid to avoiding contraindications to the examination, and at the same time for the CTA examination results of poor people are recommended to carry out the coronary artery has to create a shadow. CTA is a non-invasive imaging technique for coronary artery stenosis and other lesions. If there are symptoms of coronary artery disease such as precordial pain, or if the diagnosis is stable coronary artery disease, CTA can be used to understand the damage of coronary arteries. However, CTA has some limitations in determining the condition of coronary artery stenosis, especially for cases accompanied by obvious calcification, which may affect the judgment of the degree of stenosis. It is important to note that CTA can only be used as a reference for determining the degree of coronary artery stenosis. It is contraindicated in cases of allergy to contrast media, severe cardiac or renal impairment, hyperthyroidism, and pregnancy. If CTA suggests the possibility of coronary artery disease, further coronary angiography is recommended. If coronary artery disease is suspected, it is recommended to go to the hospital in time.