Coronary artery spasm may sometimes occur in healthy and normal people, but it is usually very short-lived, and if it occurs only occasionally and without clinical symptoms, it has little effect on the health of the organism. Coronary artery spasm refers to transient contraction of coronary arteries caused by various reasons, resulting in narrowing or occlusion of the lumen, leading to myocardial ischemia, which clinically produces angina pectoris, arrhythmia, and even myocardial infarction and sudden death. Generally, atherosclerotic coronary arteries are prone to spasm, but normal coronary arteries may occasionally experience spasm, which may be triggered by cold, overfeeding, emotional excitement, etc., and may also occur at rest. Although coronary artery spasm can occur in normal people, it is still important to go to the hospital for relevant examinations when it occurs to rule out coronary artery disease and detect other potential cardiovascular risks to avoid delay.