This paper criticizes the isolation status of the problem consciousness of two research areas, which are “migrant worker studies” and “leftbehind children studies”. When discussing the inner contradiction of the system of migrant worker, relevant studies have placed their emphasis on the growing experience of the new generation of migrant workers, but ignored the effects of their leftbehind experience. When studying the problem of leftbehind children, most studies have focused on the microinfluence on the children’s education, health and personality, but rarely extended it to the macroinfluence on the process of urbanization and industrialization. By analyzing survey data of “Protecting Rights of Migrant Workers: Theories and Practices”, this paper attempts to establish a correlation between these two areas. The results show that compared to their peer group, new workers with leftbehind experience change their jobs more frequently. Modeling by distinguishing different types of jobs, the difference in job mobility frequency between workers with leftbehind experience and those without in the manual job model and the nonskilled job model, are larger than the nonmanual job model and the skilled and semiskilled job model respectively, which indicates that it is more difficult for workers with leftbehind experience to adapt to the high intensity and the alienated labor process in the World Factory. Parents’ migration not only results in the parentchild separation and the weakness of the children’s sense of family duty, but also brings out more superior economic conditions and few farming experience, They jointly increase the frequency of job mobility of workers with leftbehind experience. Leftbehind children is the product of the system of migrant workers, and to a certain degree it aggravates the crisis of the further development of the system. The solution of the system crisis lies in gradually granting citizenship to migrant workers and restoring their family life.