“推拉理论(”Pushand Pull Factors)是研究流动人口和移民的重要理论之一,在19世纪中期由美国人伯格(D.J.Bogue)提出,乔治(P.George)等人作了进一步细化研究。他们认为,在市场经济和人口自由流动的情况下,人口迁移和移民搬迁的原因是人们可以通过搬迁改善生活条件。于是,把流入地中那些使移民生活条件改善的因素视为拉力, Pushand Pull Factors is one of the most important theories in the study of migrants and immigrants. It was proposed by the American DJ Bogue in the mid-19th century that George P. et al. Research. In their view, under the market economy and the free flow of population, the reasons for the migration and resettlement are that people can improve their living conditions through relocation. As a result, those who infiltrate the land to make the living conditions of immigrants improve are considered as rally forces,