With the continuous development and popularization of information technology, educational data governance has become a major trend to promote the development of college informatization. This paper takes data middle platform technology as the core to carry out research, takes "data empowerment, service integration" as the construction concept of a new generation of smart campus, takes data governance as the core, deeply excavates the value of data, and explores the path of upgrading and construction of smart campus in vocational colleges. This paper first gives the concept of data middle platform, then analyzes the main problems and countermeasures in the information construction of vocational colleges, and then expounds the construction system of smart campus with the core of data middle platform technology, and explains the path to support the construction of smart campus through the depth of data governance and global service governance. Finally, this paper summarizes the importance of carrying out data application and service scene construction, emphasizes the importance of top-level design, application and service empowerment and data asset application in smart campus construction, and gives an effective path for smart campus construction.