The author tries to divide the rural migration into two categories—the first generation and the second one in terms of their different age,education level and agricultural experience.Then he discusses the influences of these variables on the differences of social identities of the second generation of rural migration from the first one and the influences of the differences on their future social positions and behaviors in rural and urban areas.The conclusion of the essay is that the social identities of the second rural migration tend to become more and more indefinite than the ones of the first generation of rural migration.So it is also more difficult to come back to live in the rural areas for the second generation of rural migration than the first one in future.This is a big challenge to the social stability in China.
