"The Buried Giant"hides the metaphor of character identity in the text in the form of fragmen-ted narrative,and four metaphor characters connect an"Oedipus"plot dark line.Kazuo Ishiguro uses a circular narrative structure to reveal the unstoppable nature of the fate of the characters and the mystery and inevitability of the order of the universe,and shows the ethical relationship between memory and trauma through the tragedy of individual and nation.The boatman's question to the boat passenger corresponds to the mystery of Sphinx in"The Oedipus King".In the surface context of talking about true love,it draws the deep context of thinking a-bout the ultimate loneliness of human beings,and reflects the author's examination and concern for the survival dilemma of individual human beings."The Buried Giant"has rich levels,diverse images and profound implica-tions.It weaves a picture of medieval adventure with dense fog,which brings great thinking value to readers in terms of literary narrative techniques and philosophical ethics.