The Astragalus Plant Extract can improve the human body's systematic immunity and has the function of stepping down the blood pressure. It can help the body to expand the blood vesseland and the coronary artery. It is helpful to prevent the descend of the amount of white blood cell, haematoblast, reticulocyte, megakaryocyte. The Astragalus Plant Extract can lengthen the life of the cells and delay the consenescence.