The environmental characteristics of production place of authentic North Astragalus are summarized from the aspects of meteorological condition and ecological environment. The character structure of authentic North Astragalus is described from the aspects of intuitionistic and microcosmic. The medicinal value of the effective components of Astragalus is introduced,and the contents of effective components in authentic North Astragalus and other Astragalus membranaceus are compared. Based on above,the superiority of authentic North Astragalus as high quality and genuine Astragalus is expounded.