19世纪初,世界上只有3%的人口生活在城市;20世纪初有10%的人口生活在城市;到21世纪初,世界人口的一半已经生活在城市。专家预计,21世纪全球将有80%的人口进入城市,其中90%以上的人口来自发展中国家。随着我国改革开放的深入和城市化进程的加快,大量的农民怀着“城市,让生活更美好”的憧憬,进入到城市,农民工成为城乡分割和二元结构伴生的一个特殊 At the beginning of the nineteenth century, only 3% of the world’s population lived in cities; 10% of the population lived in cities in the early 20th century; by the early 2000s, half of the world’s population was already living in cities. Experts predict that in the 21st century, 80% of the world’s population will enter the cities, of which over 90% will come from developing countries. With the deepening of China’s reform and opening up and the accelerating process of urbanization, a large number of peasants have entered into the cities with the vision of “Better City, Better Life” and migrant workers have become a special affiliation between rural-urban division and dualistic structure