Labor migration among regions and between the urban-rural has been a popular research topic in labor economics,development economics, industrial economics and regional economics.The world economy development history proves that such labor migration is inevitable economic phenomenon in the process of economic development.However,there are some keys to better understand China's labor migration,such as what are the characteristics of China's labor migration? What differences are there in China's labor migration compared with that of the development countries and other developing countries? What are the connotational and theoretical implications of China's labor migration? These are the core questions of this paper.Understanding these questions will patch up the shortages in the existing researches of the field,lay solid foundation and provide valuable reference for the economic effects, the welfare effects of China's labor migration and associated institutional arrangements and macroeconomic policies. Labor migration among regions and between the urban-rural has been a popular research topic in labor economics, development economics, industrial economics and regional economics. The world economy development history proves that such labor migration is inevitable economic phenomenon in the process of economic development. However, there are some keys to better understand China's labor migration, such as what are the characteristics of China's labor migration? What are the characteristics of China's labor migration compared with that of the developing countries and other developing countries? What are the connotational and theoretical implications of China's labor migration? These are the core questions of this paper.Understanding these questions will patch up the shortages in the existing researches of the field, lay solid foundation and provide valuable reference for the economic effects, the welfare effects of China's labor migration and associated institutional arrangements and macroecono mic policies.