Abstract: As a academic concept from the western cultural background, Non-Government Organization is important in the maintenance of equilibrium of social structure.In our state, Non-Government Organization is the outcome of social transition.Also, social transition brings about the collapse of the traditional social structure, which makes all respects of social relation greatly transformed and the reconstruction of social relation inevitable.In the perspective of‘social middle class', This paper argues that Non-Government Organization plays an importantly promotional role in the coordination between the state and society, in the harmony of interest relation as well as in the reconstruction of social trust and the restoration of social ties, which will be helpful to the reconstruction of social relation.