Abstract: The mixed use of industrial land addresses the practical needs of new industrial development and evolving economic structures, contributing to more efficient and intensive land use and higher productivity. By analyzing mixed industrial land-use experiences and practices in representative areas, this paper clarifies its value orientation and proposes a supporting policy framework and planning principles. The research shows that mixed industrial land-use policies in representative areas focus on optimizing spatial layout, refining land use classifications, establishing development control standards, and innovating supply mechanisms. Mixed industrial land should promote innovation, resource conservation, intensive land-use, and shared development. Relevant policy designs should follow the process of "planning and site selection—categorical control—supply management—rights allocation—utilization and supervision."