Domestic migration (of populations both with and without changes in their household registration, or Hukou) ranks among the core issues of population and development in China in the coming decades, and it is also a major factor affecting population and development and the associated challenges across the country (in provinces, municipalities and autonomous regions). The assessment of the characteristics and trends of population migration and its impact is a key step in formulating and improving population and development strategies, advancing social development and conducting social science studies in the future. Building on the 1% National Population Sample Survey conducted by the National Bureau of Statistics (NBS) in 2015, this report summarizes the major characteristics and trends of domestic migration (simplified as migration hereafter) in China since 2000, analyzes the prominent challenges faced, and proposes corresponding recommendations and actions.