As Ian McEwan’s first novel, The Cement Garden tells a story of four children living together after their parents died from the protagonist Jack’s first-person perspective. It shocks readers with its Gothic elements and a metaphoric title for the degeneration of the traditional England garden in the wake of increasing industrialization. By describing the grotesque and terrifying emotional experience of alienated individuals in modern society, McEwan does more than just criticize the repressive capitalist system, attempting to explore ways to restore social order from anomie and decadence. Under Kristeva’s theory of abjection, this paper attempts to examine the psychological factors underlying the bizarre behaviour of the characters; meanwhile, it ventures to reveal the novelist’s humanistic and political concerns alike and the cultural and political significance of the novel.