Abstract: As a new genre of literary criticism, the theoretical construction of the ethnic-criticism of literature must be concentrated on the relative understanding of the nature, function and value of literature itself, which is required by its own logical development of the disciplinary building of literary criticism. Meanwhile, the occurrence and further development of this critical school must be combined with the present ethnical and moral situation of social life, and it should accordingly point out the future direction that ethnics should follow,which is also a clear verification of the scientific judgment, i.e. literature is from social life but beyond it. Finally the knowledge of the present ethnical and moral situation will serve the harmonization of our realistic life.