Blackcurrant is rich in vitamin C, phosphorus, magnesium, potassium, calcium, anthocyanins and phenols. Blackcurrant fruit contains a lot of vitamins A, B, C, D, e, F, P, etc., especially the content of vitamin C is higher than that of most fruits, which is several times to 100 times higher than that of apples, peaches and grapes; It contains a high proportion of minerals such as calcium, magnesium, sodium, potassium, iron, phosphorus and zinc. The content of calcium is the highest among fruits. It is very suitable for children and the elderly to supplement calcium. The fruit of blackcurrant contains quite a lot of potassium and magnesium salts. The main function of potassium salt is to strengthen the excitability of muscle, stabilize the cell membrane of heart muscle, and change the law; Magnesium salt has certain preventive and therapeutic effects on hypertension and myocardial infarction. When people are overloaded with mental or physical strength, a kind of cormoncortisone substance that enters the blood can cause myocardial necrosis. It has been clinically proved by medical experts that drinking beverages containing potassium and magnesium in blackcurrant can promote the formation of cortisone, so it has a certain health care effect on patients with heart disease. Blackcurrant fruit contains a high amount of bioflavonoids, which can effectively reduce the degree of atherosclerosis, soften and thin brittle blood vessels, improve the permeability of blood vessels, and prevent atherosclerosis. As a substance for delaying aging, blackcurrant fruit can block the generation of nitrosamine, have anti-oxidation effect, and also have synergistic effect against ascorbic acid. It has the function of preventing and treating cardiovascular and cerebrovascular diseases and has anti-cancer activity. At the same time, it has strong anti-cancer and health care effects.