Abstract: Achieving common prosperity is the essential requirement of socialism. A common prosperity index system can be construct from the three dimensions of development，sharing，and sustainability. The regional disparity，dynamic evolution，and spatial concentration of China’s common prosperity levels in the period from 2007 to 2020 are measured by using the Dagum Gini Coefficient，Kernel Density Estimation，and Moran Index methods. It is discovered that in the designated time span，the overall level of common prosperity in China was low but growing；the index of sharing was the largest，followed by the index of development，while the index of sustainability became the smallest after 2015 and its growth has stagnated in recent years. There were obvious regional differences in terms of common prosperity，yet showing a narrowing trend，and inter-regional difference was the main source of overall differences. The absolute differences of common prosperity and sharing also followed a decreasing trend，but the absolute differences of development and sustainability were widening. The spatial agglomeration of common prosperity is evident，with the agglomeration of sharing index the most prominent，followed by those of development and sustainability. Therefore，we should bolster common prosperity through high-quality development，attach importance to the sustainability of common prosperity，strengthen inter-regional exchanges and cooperation，and promote the coordinated development of common prosperity among regions in light of local and current conditions.

Key words: common prosperity, index system, regional disparity, dynamic evolution, spatial concentration, sustainability