[Objective] To analyze how to use DNA molecular marker in the following aspects:analyzing the genetic diversity of medicinal plants,studying the relation between medicinal plants,discovering new resources,protecting the Chinese drug materials,et al.

DNA analysis technique has been widely used in criminal actions since a case involving immigrant’s paternity test was successfully solved through the technique of DNA fingerprints in 1985.

Major technical background of fecal DNA analysis technology,the application of the technology in species identification,individual identification,sex determination,population investigation,genetic diversity,such as behavioral ecology,and its contribution to wildlife research and disadvantages were reviewed.