This book delves deeply into the multi-dimensional issues of personal information and data management in the era of big data. It covers a wide range of topics, from personal information protection and user data management on network platforms to the management paths of sensitive personal information, as well as the design and optimization of supply chain information sharing platforms based on WEB3.0 and the construction of smart campuses in the context of 5G. The book comprehensively analyzes the challenges and opportunities of data management in the current big data environment. By integrating the research status at home and abroad and combining theory with practice, it proposes practical management countermeasures and optimization paths, aiming to provide strong support for policy-making, enterprise operation, and technological innovation, and to promote the safe, efficient, and sustainable development of personal information and data management.