Abstract: Saururus chinensis,a well-known traditional Chinese herbal medicine,is commonly used in China. It has a variety of chemical constituents,mainly lignans,flavonoids,volatile oils,alkaloids,polysaccharides,polyphenols,fat-soluble and anthraquinones. Lignans and flavonoids are the main pharmacodynamic substances with wide pharmacological activities. Traditional Chinese medicine ingredients are not only much but complicated,and the basis for using a single indicator as a quality standard is not accurate. Based on the chemical composition and pharmacological action of Saururus chinensis from the affinity and the characteristic,the traditional drug,new drugs,blood into the traditional medicinal properties,composition,measurability,the components of quality markers(Q-marker) is analyzed,which provides the three white grass provide more accurate definite basis for the clinical application to develop a more scientific quality standards. In order to ensure the safety of the clinical use of Saururus chinensis,the toxic components were summarized,and further research on the isolation and identification of toxic components is recommended.