The North Asia nations have ever played a very important role in Chinese history.Over the past years, most historical documents have valued theohistory of the Han nation so much as to neglect the historical status of the North Asia nations. As far as this article is concerned, the North Asia nations have a signigicant place both in Chinese and human history. Thus, to construct a new field concerning the study of North Asia history, regarding the North Asia nations as the main body,is quite crucial. At the same time, restudying Chinese history, from the perspective of North Asia history, is much more instrumental in developing Chinese history research with multiple perspective. In accordance with such an idea mentioned above, first of all, this paper illustrates the independence of the North Asia nations in history and culture. Second, this study specifies various kinds of reasons to expound the significance of regarding the North Asia nations as the chief part to act as a research field. Third, this paper clarifies the significant influences the North Asia nations have on the development of Chinese history. Fourth, taking the North Asia nations for an example, this article elucidates the relations among the nations in Chinese history. Finally, this study reflects upon the current proposition of "The Chinese Nation" in terms of multi-national viewpoint. To sum up, from the angle of North Asia history, this paper hopes to change the standpoint of departmentalism as regards Chinese history so as to enrich the field of Chinese history research.