Unified Communications is one of the research hotspots in today's computer applications, and people's requirements of application service in unified communications system applications and services are increasingly higher. In terms of data access, based on the traditional relational database or file system-based storage, traditional way has become increasingly unable to meet the needs of the application. With the development of Hadoop technology and related subsystems, the advantages of distributed storage become obvious. Therefore, on the basis of analyzing respective characteristics and system architectures of HBase and Hive, this article combines with specific projects of Unified Communications and proposes the design method of storage engine based HBase-Hive integrated design, in order to solve the unsatisfied problem of data security, data access efficiency etc. in Unified Communications systems. The contrast experiments show that the design scheme not only improves the efficiency in data query, but also makes fully prepare for the development of subsequent data mining.