My research direction is to engage in research work related to cloud computing, big data and network security. Important work has been completed in service-oriented architecture, service discovery, service composition and network resource management. Focusing on the field of data service technology, researching core key technologies such as efficient storage and deep mining of IoT big data, developing service systems and management systems that cover the entire life cycle of IoT data, and realizing DaaS (Data as a Service) cloud for big data Manage and process data services.