Potentilla anserina L.having been widely used for health care in folk, it is famous as RenShengguo. The Institute of Chinese Medicine of PLA finds that it is applicable for treating hepatitis B treatment. The registration of 2 patents about JMS is being applied and the clinical trial for JMS troche has been in the second phase. The thesis was aiming at the research of the extracts of bioactive site of JM, combining with other excipients, preparing extracts of bioactive site of JM sustained-release pellets. ...