Currently,the digital economy has become one of the main engines driving overall economic growth,and data has been officially listed as the fifth largest factor of production.As the marketization and valuation processes of data elements rapidly evolve,highlighting the increasing value of data,data security risks are also escalating.Strengthening data security governance and protection has emerged as a paramount concern in the digital economy era.Drawing on the Changyang data security practice case,this paper introduces the industrial Internet data asset security management platform,which utilizes Changyang Technology's four-tier security operating system as its foundation.Through the functions of data asset mapping,data classification and grading,sensitive data identification and positioning,and data life-cycle security monitoring,the platform shortens the data governance cycle and reduces the risk of sensitive data leakage.It strengthens data security protection across the entire lifecycle,achieving dynamic monitoring and management of enterprise data assets,and promoting innovative development,rational utilization,and security protection of data resources.