Immigration research background

China is facing new urbanization and industrialization, and is gradually entering an aging society. The floating population is about 236 million, of which 75% flows from rural areas to cities. During the construction of the project, reservoir migrants will feed about 27 million people. Immigration is a hot social issue at present. The resettlement of engineering immigrants, the connection of social security system, the influence of large-scale immigration on politics, economy and culture, the change of supply and demand of public services, social policies and social management, and the change of regional economic growth factors all need to be solved urgently. Therefore, immigration research is imperative.