Arterial vasospasm is actually a narrowing or even complete closure of the vessel lumen caused by a violent contraction of the arterial vessel wall. Arterial vasospasm may also cause the arterial plaque on the blood vessel wall to break off and form thrombus blocking the blood vessel. Therefore, spasm of cardiovascular vessels can easily lead to serious lesions such as myocardial infarction and cerebral infarction. Therefore, preventing the occurrence of arterial vascular spasm is of great importance to prevent and treat cardiovascular diseases. Many factors can stimulate the arteries and lead to vascular spasm, such as high or low temperature, strenuous exercise and emotional excitement. However, the underlying cause is also the lesion of the blood vessels themselves. Recent studies have found that blood vessels are not only the pathways for blood flow, but also the endothelium can secrete nitric oxide, a vasodilator, and endothelin, a vasoconstrictor. Under normal conditions, the secretion of vasodilators and vasodilators is balanced. When the body is stimulated and the endothelial function is disturbed, the secretion of vasodilator substances increases while the secretion of vasodilator substances decreases, and spasm occurs in the blood vessels at this time.