Abstract: In the fantasies written by the British writer Doris Lessing， her consciousness between reality and imagination always exists， which constructs the essential attitude of Lessing on the issue of reality and imagination in the real world and literary world. Reality and imagination in Lessing's consciousness are a pair of opposite beings with integrity in them， which cannot be divided but could be deconstructed and illustrated dialectically. Performed by experienced imagination and transcendental imagination， the relation between reality and imagination has been established， which is expressed as a spiral structure in the narration. This consciousness helps Lessing to make her views on the limit between the real world and literary world， and new hintson genre classification as well.

Key words: Doris Lessing, consciousness between reality and imagination, integrity of opposites, transcendental imagination