From the spatial perspective,this paper,combining with the context of American society and history,studies the spatial forms and functions in Langston Hughes'poetry.Hughes'poetry presents three spatial forms-the real material space,the imagined memory space,and the open"third space".The real space shows the living experience of the modern people,the memory space rebuilds the spiritual home of the ethnic group,and the"third space"constructs an open alternative space.Through the spatial writing,the poet reveals the survival crisis of modern individuals and groups,and expresses his aesthetic reflection and criticism on modern American society.