Firstly, the connotation of rural industrial integration development is explained theoretically. Then, based on the provincial panel data from 2005 to 2019, the level evaluation index system is constructed from the four integration dimensions of rural industrial integration development, and the level of rural industrial integration development is comprehensively evaluated by using the coupling coordination degree model and the entropy method. The results show that the overall level of rural industrial integration in China has increased from 0.162 to 0.326, by 0.164. The development of rural industrial integration in various regions has shown a steady growth trend, but the level of rural industrial integration in the western region is far lower than that in other regions. The level of integrated development in four different dimensions shows obvious regional heterogeneity.