Abstract: Cordyceps sinensis ( Berk.) sacc. is one of the most famous traditional Chinese medical herbs. This paper reviewed the various chemical ingredients of Cordyceps sinensis, summarized the pharmacological effects of Cordyceps extract including antibacterial, anti-viral, and anti-tumor, summed up the detection and analysis methods of Cordyceps acid, Cordyceps polysaccharides, adenosine, cordycepin. To establish the technical requirements of raw materials, the national standard of the detection methods is very important. The establishment of effective means of verification of product effectiveness is worthy to study .