Ancestral source legend, as a special cultural resource, has an irreplaceable functions and values in the historical process of the construction of community for the Chinese nation. And in the cultural practice of fostering a strong sense of community for the
Chinese nation, to fully explore and apply the potential of this cultural resource is not only the basic meaning of the inheritance and protection of the traditional culture for the Chinese nation, but also the proper meaning of promoting the construction of the relevant social culture. Adopting the perspective of historical anthropology to examine the ancestral source legend of various ethnic groups, it can be seen that the expression of ancestral source, as a kind of collective memory of its autonomous bit perspective, can unite and cohere the group of culture holders closely together, and play a cohesive function that is difficult to be played by other cultural elements. The construction of community for the Chinese nation is precisely relies on the rational interpretation and genealogical writing of diversified cultural resources. The ancestral legend, as cultural symbols, and their overall pattern manifest and reveal the social and historical nature of the construction of community for the Chinese nation.