Inter provincial migration is the most concerned content in the analysis of population flow direction. Where the floating population comes from, where it goes, and what changes it has in different stages have always been the focus of public discussion and academic research< Br > < div class= "contheight" > < / div > in the past few decades, there have been several major changes in the flow of population between provinces, which can be roughly divided into two stages: the first 30 years and the last 40 years: the first 30 years are mainly planned migration from the east to the central and western regions, and from cities to rural areas, including going to the mountains and countryside, third line construction, reclamation, etc; In the last 40 years, it was mainly a market-oriented migration from the central and western regions to the East< Br > < div class= "contheight" > < / div > there are rich studies on inter provincial mobility after the reform and opening up, such as Wang Guixin (2005), Wang Guixin and pan Zehan (2012). On the whole, the immigration and emigration patterns of China’s provinces in 2000 and later have a high degree of similarity and stability at different times: population immigration is decentralized, immigration is centralized, and the immigration and emigration intensity of some important population emigration and immigration places show the characteristics of the strong being strong and the strong being stronger. The center of gravity of population migration moved northward, and the Yangtze River Delta metropolitan area replaced the Pearl River Delta metropolitan area, becoming the main area of inter provincial population migration since the 21st century. Wangguixin (2012) believes that the basic model of inter provincial population migration in China in the future will not change fundamentally due to the impact of geographical environment, but changes in national policies, regional economy, transportation accessibility and so on will make some local changes in this model< Br > < div class= "contheight" > < /div> then, after the release of China’s census data in 2020, what changes have taken place in China’s inter provincial population migration< br>