Substances that can soften blood vessels, lower blood lipids, antioxidant, lower blood viscosity thus promoting blood circulation and reducing or avoiding the deposition of harmful substances in blood can be called blood scavengers. High-density lipoprotein, calcium ions, lecithin and other substances are all blood scavengers, and many foods and drugs in life have the role of blood scavengers. Blood scavenger drugs include vitamin B6, vitamin C, vitamin E, soy isoflavones, calcium, magnesium, etc.; lipid-lowering drugs also have the function of blood scavenger by reducing the concentration of blood cholesterol, such as Rosuvastatin, Lovastatin, Simvastatin, Pravastatin, etc.; anti-platelet drugs have the function of blood scavenger by inhibiting platelet aggregation in blood vessel wall, representative drugs include aspirin, dipyridamole, etc. In addition, the seven herbs in traditional Chinese medicine, Salvia miltiorrhiza, Tian San Qi, Hawthorn, Radix et Rhizoma, Psidium guajava shell, and He Shou Wu can also cleanse the blood vessel wall and have the function of blood scavenger.