In the era of digital economy, the promotion of rural digitalization and giving full play to the productivity of data elements will have a far-reaching impact on the rural industrial integration in rural revitalization. Firstly, this paper systematically combs the influence mechanism of rural digitalization on the integrated development of rural industries, and analyzes the possible regional heterogeneity of this influence from the perspective of rural human capital. Secondly, the impact of rural digitalization on the integrated development of rural industries is empirically investigated by using the panel data of Chinese provinces from 2008 to 2019. Finally, considering the difference of resource endowment among different provinces, especially the regional difference of rural human capital as the main body of digital technology transmission and application, which may affect the role of rural digitalization, the paper sets rural human capital as a threshold variable, and empirically tests the threshold effect of rural digitalization. The results show that the influence coefficient of rural digitalization on the integrated development of rural industries is significantly positive, and passes the significance level test of 1%, which means that rural digitalization is conducive to promoting the integrated development of rural industries; Extension of agricultural industrial chain, multiple functions, expanding agricultural development of agriculture and fostering the subject of industrial convergence is a new rural digital concrete mechanism affecting the development of rural industry integration, by contrast, the rural digitalization of agricultural industry chain extension, agricultural versatility, industry convergence subjectivity cultivation promoting effect to significantly is greater than the agricultural development of new forms; Rural digitalization, rural human capital and development of rural industry fusion between obvious nonlinear threshold relationship, namely rural digital integration of rural industry development by rural human capital levels play a role of restriction and influence, with the constant improvement of the rural human capital level, rural labor force the stronger the ability to use digital resources and digital technology, the more conducive to playing the role of rural digitalization in promoting the integrated development of rural industries; Further coupling and coordination relationship test shows that the higher the coupling and coordination degree between rural digitalization and rural human capital, the more conducive to promoting the integrated development of rural industries. To this end, the paper puts forward the following policy suggestions: Firstly, promote the construction of digital countryside, build the digital transmission channel of rural industries, speed up the process of rural digitization, deeply excavate and play the role of digital factors of productivity, and promote the high-quality integrated development of rural industries; Secondly, adjust measures to local conditions to strengthen the technical training of rural labor force data, improve the rural labor force application of digital resources and the ability of digital technology, constantly strengthening the rural human capital accumulation, enhance the rural human capital level, enhancing the rural human capital and the coupling of the digital technology, in order to promote the development of rural industry towards depth fusion.