Ears have oblique lines does not indicate that the patient suffers from coronary heart disease, there is no relationship between whether or not the patient suffers from coronary heart disease and whether or not there are oblique lines in the ears, and you can’t rely on having oblique lines in the ears to diagnose the patient suffering from coronary heart disease. Coronary heart disease is caused by atherosclerosis of the coronary arteries, resulting in narrowing or occlusion of the lumen of the arteries, causing myocardial ischemia, hypoxia, or necrosis of the heart disease. Coronary heart disease occurs mainly due to the combined effects of various risk factors, such as hypertension, diabetes, hyperlipidemia, obesity, smoking and genetic family history. Clinical diagnosis of coronary heart disease is not only based on the risk factors of coronary heart disease, but also based on the clinical manifestations of myocardial ischemia, as well as objective examination of myocardial ischemia evidence, including electrocardiograms, exercise electrocardiograms, etc., and selective coronary arteriography can be performed to clarify the situation if necessary.