Being a policy presentation of national right in constitution, "national unity" is an institutional construction of specific values and beliefs, which is subject to historical change of social culture. Once the proposition of "national unity" was put forth, it transcended the narrow nationalist vision, showing the constitutional logic about status identity and national identity, sovereignty structure and governance right structures, program democracy and united political consensus. The structural analysis of the proposition of " national unity" would be helpful to clarify the basic properties under the constitutional framework, ideological origins, reality basis, and to grasp its di-alectical relationship with the holistic view of state, and further to devise different ways to promote the construction of specific, popular and practical system.