Household registration system is a unique management system in China. The rights of people to enjoy public services and social welfare are largely determined by their Hukou. How to promote the Migrant Workers to transfer their hukou to cities has been the key to promote the urbanization process of China. Based on the Dynamic monitoring data of floating population of National Health Commission and the data of the National Bureau of Statistics. Studies shows that: The overall willingness of the Migrant Worker to transfer their Hukou to cities is weak, and the imbalance between regions is obvious. The level of regional development has a significant effect on the Migrants' willingness to transfer Hukou. The trend of family-oriented migration makes the willingness of Migrant Workers to transfer their Hukou to cities more affected by non-economic factors. Further research shows that the level of regional development influences the willingness to transfer Hukou through the ability to provide public services and social welfare. When migrant workers in the eastern transfer their Hukou to cities, social factors such as education, health care, culture and ecological environment are considered more than economic factors such as employment and income, while people in central and western regions are still more influenced by economic factors.