Since the emergence of history as a discipline,two of its most important principles are pursuit of truth and teaching.At the end of the 19th century,the positivist tradition in history was challenged.The transition from the 20th century to the 21th century had witnessed"the historic revolution"which was put forward by Theodore C.Hamerow,an American historian,while the post-modern historical studies have brought in shocks in all aspects.In this process,the question of objectivity in history writing has always been raised and discussed as it touches the essence of history study.Given the previous study,this article in-tends to analyze,from the point of view of imagination,the practice of history writing,in a way to explore its nature.It reaches the conclusion that imagination is a creative way taken by historians to understand the past.It shapes objects in distinction,and constructs a holistic society in connection,which is a reflection of people's way of thinking and cognition in historical research