As net inflow of the permanent population stays high，the people-oriented development concept has been put into practice in Guangzhou to promote social integration among the floating population. On the basis of understanding the heterogeneity of floating population，the accuracy of service and management has been improved. With the application of points system，more and more immigrants can acquire the ac-cess to basic public services actively and orderly. What is more，the immigrants can take part in primary social governance by means of various formal or semi-formal or-ganization carriers. Most importantly，there are independent complete institutions and personnel to serve the migrant population which receive long-lasting support from the local government. Finally，constant promotion of floating population integration helps form the floating population management system that is accordant with the develop-mental rules for mega city.