Regular use of American ginseng can resist arrhythmia, myocardial ischemia, myocardial oxidation and strengthen myocardial contraction ability. Coronary heart disease patients with symptoms of deficiency of qi and yin, panic and shortness of breath can take American ginseng for a long period of time, with remarkable curative effect. The efficacy of American ginseng also lies in its ability to regulate blood pressure, which can effectively reduce both temporary and persistent blood pressure, and help the recovery of hypertension, arrhythmia, coronary heart disease, acute myocardial infarction, cerebral thrombosis and other diseases. Myocardial ischemia is a pathological state in which blood perfusion to the heart is reduced, resulting in a decrease in oxygen supply to the heart, abnormal energy metabolism in the heart muscle, and an inability to support the normal work of the heart. Myocardial ischemia can occur on physiological and pathological basis, for physiological myocardial ischemia, taking American ginseng can undoubtedly improve myocardial ischemia; for pathological myocardial ischemia, it is necessary to give the secondary preventive treatment of coronary heart disease in the acute stage and on the basis of this treatment to give the necessary interventional surgery or surgical bypass surgery, American ginseng is used for the recovery of myocardial ischemia with significant therapeutic effect.