Abstract: A new-middle-stratum which just exists in industrialized societies turns up along with the development of China's social transformation. The natures of it are: heterogeneity to some degree; two different orientations of interests; evaluation of official rank standard consciousness and. power-exclusion. From the perspective of social mobility, middle-stratum and lower-stratum within new-diddle-stratum tend to enter into an alliance with the lower-stratum of the society while the body of this stratum-managers, technicians, and private entrepreneurs-will possible establish friendly ties with the upper-stratum of the society.