Chocolate has a beneficial effect on the heart by softening the cardiovascular system, preventing blood vessel embolism and lowering blood pressure. Chocolate is made from cocoa beans and supplemented with sugar, milk or cocoa butter, with a slightly bitter flavor and the unique aroma of cocoa; it is a common and widely used ingredient. Chocolate contains a large number of natural antioxidant polyphenols, which can reduce platelet activation and prevent the reduction of vascular elasticity and aging; it contains flavonoids that can resist fatty deposits and inflammation in the blood vessels, thus preventing heart disease and its vascular infections; the steroids contained in chocolate can also effectively prevent the elevation of blood pressure. Although chocolate has the above effects on the heart, but its role as a food without treatment, such as heart disease is recommended to consult a doctor for symptomatic treatment in a timely manner, and its high sugar and fat, not easy to eat a lot to avoid obesity and other symptoms.