Abstract:Constructing an evaluation index system for enterprise big data security can help evaluate enterprise data security scientifically, discover the hidden data security risks and make up for data security vulnerabilities. On the basis of clarifying the connotation of big data security, we determined the security elements of enterprise big data, applied the SHEL model and referred to the information security technology of big data security management guide(GB/T 37973-2019)to establish the assessment framework consisting of big data basic security, management security and application security, built the "three dimensional integrated" enterprises big data security evaluation index system which includes three main dimensions, eight basic aspects and twenty four observed indicators, and applied Delphi method to determine the weight of the index, aiming at providing technical ideas for enterprise big data security assessment and providing relevant reference for the research related with big data security.