Abstract: Since the reform and opening up, China has broken down the rigid political integration mechanism, releasing a wide space for strata differentiation and social development. With the sustained and rapid class differentiation, China's political integration has gone through two stages from “unconscious accommodation” to “selective integration”. This process shows great change from a direct, mechanical integration around class struggle to an indirect and organic one with economic development as its core. Comparing with the further social development, the cultivation for a new integrating mechanism is much slower and lagged behind the strata differentiation. To build an ideal corresponding integrating system, we must keep balances between “extending power base” and “adjusting strata relations,” “social control” and “civic service”, and “direct integration” and “indirect integration”.