By selecting panel data from 30 provinces in China （excluding Hong Kong， Macao， Taiwan， and Tibet） from 2012 to 2022 and measuring the level of integration between the digital economy and the real economy， a two?way fixed effect model is employed to empirically examine the influential effects and mechanisms of digital?real integration on common prosperity. The study finds that digital?real integration facilitates the promotion of common prosperity， which remains valid after multiple tests. And mechanism regression results indicate that its promoting effect on common prosperity is primarily achieved by enhancing innovation?and?entrepreneurship's activity， driving industrial structure's upgrading， and increasing tax revenue. Furthermore， heterogeneity analysis reveals that the promoting effect is the strongest in central China， followed by eastern China， but insignificant in western China. Additionally， it has a more significant impact on the development and sustainability of common prosperity but insignificant on its sharing aspects.