The source of the plant] Pueraria lobata Willd Ohwi [ CAS No.] 3681-99-0 [ Molecular formula and molecular weight] C21H20O9 416.37 [ Main specifications] Puerarin 98% 99% test by HPLC [ Pharmacology function] 1.Relieve tension in muscles and promote blood circulation 2.Descend myocardial oxygen consumption and resist cancers 3.Increase coronary blood flow and stimulate blood micro-cycle 4.Treat sudden deaf of all aged group 5.Promote the risk of cardiovascular diseases