Abstract: In view of the processing status of catalytic diesel oil, this paper systematically reviewed the value-added and high-value utilization technology of catalytic diesel oil in the domestic and overseas based on process flow, technical principle, industrial application and so on, and the operation of industrial units were highlighted. From the perspective of practical application, the concept and processing principle of molecular refining should be fully adopted for the value-added and high-value utilization of catalytic diesel oil. According to the characteristics of different processes, the ideal components should be selectively retained and the non-ideal components would be efficiently transformed, or the ideal and non-ideal components should be efficiently separated and transformed. In the future, the value-added and high-value utilization technology of catalytic diesel oil should be fully combined with the innovative development of catalytic materials, reaction engineering, mass transfer engineering and other aspects, such as the coordination of high activity catalytic materials and process enhanced mass transfer, and the development of new products with high-added value, which will achieve continuous breakthroughs through technological integration.