Based on the theoretical background and statistical research，combined with laws and regulations，policy measures，practical operation and other data，this report discusses various mechanisms to promote the urbanization process of floating population in Beijing，including top-level strategic design mechanism，employability improvement mechanism，housing resource allocation mechanism，social security transfer and continuation mechanism，social integration mechanism，etc.. The research on the promotion mechanism，which is connected with the economic and social theory at the top and the practical policies and measures at the bottom，is the key content to promote the urbanization process of the floating population，and plays an important role in promoting the urban and rural economic and social development of Beijing.