On this system,the article has put forward of constructing the social security system which aims at the urban peasant worker.

Urban peasant worker, as a newly emerging thing that filled with vitality, which is the important symbol of change from traditional society to modern society in China, which is the special social group with the development of society, which is huge power with the transformation of the economy and social structure.

The urban peasant worker of our country is a special colony presented in the period of the society makes the transition.

This thesis analyzed the function and the influence factors of sports activities of the city farmers thoroughly,pointed out the necessity and urgencies that they participate sports activities,and put forward the possibe counterplan for them.

The farmer workers in cities from the angle of overall development of cities and the counteryside;

The essay reviews the studies on farmer workers in cities in the past two decades, by examining causes of the studies, their contents and weaknesses.

In recent years,the problems upon rural migrant workers have aroused great attention among the social science circles.

Overall planning for the rural and urban development necessitates a step-up pace of urbanization of rural migrant workers.

Working in cities is a great influence to the citizens and the peasant workers themselves, to urban and rural development of economy and society, to the industrialization and urbanization progress of China.