I, efficacy 1. antibacterial effect: astragalus contains a variety of natural antibacterial components, can inhibit a variety of bacteria and viruses to a certain extent, to reduce the invasion of germs on the human body, to improve the human body's ability to resist disease. In addition, astragalus contains polysaccharides, which can improve the phagocytic ability of cells, effectively enhancing the body's immunity.2. Anti-aging: rich in antioxidant factors, can remove excess free radical components in the body, thereby improving cell activity, delaying cell death, thus playing a role in delaying aging.3. Diuretic swelling: if the body has edema, urination is not conducive to taking astragalus can play a good role in relieving the problem. It can also protect the kidneys and improve their metabolic capacity. Second, contraindication 1. Astragalus is more suitable for people with qi deficiency, spleen deficiency and dampness, such as fat and flabby muscles. You can eat astragalus. But people who are too thin and too strong are not suitable for taking astragalus.2. People with kidney disease, such as yin deficiency, dampness-heat and excessive heat-toxicity, can't take astragalus, which will have toxic side effects to aggravate the condition and cause unnecessary effects on the body.3. It is not suitable to be eaten with cinnamon and red ginseng. Because astragalus itself is a warm substance, if you take it with them, it may be too much tonic and fire.