In the era of great migration, rural population has been the majors of China's population migration. Using data from the last three population censuses, this study explores the evolution and network characteristics of interprovincial rural migration in China from 2000 to 2020 and employs a panel model to diagnose its influencing factors. The results show that interprovincial migration of China's rural population has grown rapidly, but the growth rate has slowed down. The scale of provincial rural emigration has shown a differentiated trend with the Heihe-Tengchong Line as the boundary and presents a "center-periphery" pattern, and the main destinations of migration are the eastern coastal provinces. From 2000 to 2020, China's interprovincial rural migration network had a strong centralization, but the agglomeration core of the network tended to be diversified. Spatially, the destination choice of interprovincial rural migration has a clear tendency towards proximity, and the interprovincial migration network has gradually evolved from an "umbrella-shaped" pattern to a "funnel-shaped" pattern. The main factors influencing the evolution of interprovincial rural migration network in China include per capita GDP, natural disasters, topographic relief, spatial distance, rural hukou population and internet penetration rate. To guide the orderly migration of rural populations to support the implementation of major national strategies, it is necessary to promote regional coordinated development, deepen rural hukou system reform and smooth the factor flow mechanisms.