Abstract:Experience and history in west developed countries have showed that industrialization is necessary to economy flight. With the industrialization, labor immigration is the problem which have to deal with for every country. Currently, the main question during this immigration is how the farmers enter the city. By using the fist-hand investigation, the present study tries to analyze on relation between Households' richness Difference and Farmers Entering the City. Our study shows that there are not only common rules and trends but also difference on the cause and obstacle, the approach, the charge and earning for richness Difference farmers when they entering the city. Basis on Households' net income difference, constituting appropriate policies will expedite the pace of labor immigration in China