Abstract:[Purpose/Significance] With the exponential growth and wide application of university data, its security has gradually attracted attention, and the construction of a university data security governance system model based on cloud platform can provide enlightenment for the improvement of university data security governance capabilities. [Method/Process] Based on the comparison of the research results of cloud platform at home and abroad, the hierarchical model of cloud platform is summarized, and its application relevance in data security governance in universities is explored. On this basis, combined with the DSMM model, a cloud platform-based data security governance system model is constructed, including basic security layer, data resource layer, security service layer, organization construction layer and application security layer. [Results/Conclusion] Through the in-depth analysis of typical cases of data security governance of Cambridge University, this paper provides demonstration and supporting evidence for the data security governance system model of universities based on cloud platform, and obtains three enlightenments: actively promote the security guarantee capability of cloud technology, orderly promote the mechanism and process of standardized use of data, and strive to build a multi-subject data security governance model.