The report of the Party's 20th National Congress emphasizes constructing a new service industry system with high?quality and high?efficiency， and promoting a deep integration of modern service industries with advanced manufacturing and modern agriculture. Industrial integration is a complex concept that is interdisciplinary and cross?field and involves multiple dimensions. Due to the differences in theoretical perspectives and research contexts， established studies have not yet reached a consensus on such general issues of industrial integration as conceptual connotations， and cause and effect， etc. At present， a relatively unified systematic theoretical framework for industrial integration has notbeen yet formed in China， which makes many scholars， when trying to combine economic theories with China's industrial development practice to study China's specific industrial integration models and paths， government regulations， industrial policies and other practical issues， still have theories and policy research lagging behind the practice， and it is difficult to answer the questions about its systematicity， rationality， and conformity with the actual situation in China. Based on sorting out the concepts and forms of industrial integration， this paper summarizes and looks forward to the general issues such as its driving mechanism， development process and development trend. Future research can be focused on deepening its theory at the stage of high?quality development， on the integration between digital economy and real economy， on its issues under the construction of modern industrial system， and on the impact of the differences in industrial attributes on industrial integration.