Ginseng is a kind of has a very high medicinal value of Chinese herbal medicine and has a long history in the application of clinical medicine in China.Materia medic records on ginseng dates back to two thousand years ago.With the rapid development of modern science and technology,research on Ginseng has been gradually deepening.By collecting relevant documents and literature,this paper is to summarize chemical compositions and pharmacological effects of ginseng and processed products of red ginseng and to discuss the development research trend for Ginseng.