Abstract: Network slicing is one of the important characteristics of 5G network architecture. Operators can support different vertical industry applications by 5G Network slicing, realize flexible and efficient network resource arrangement and scheduling, and meet the differentiated business characteristics and security requirements. This article introduces the concept and implementation scheme of 5G network slicing, describes the application scenario and security requirements of 5G Network slicing, analyzes the security risks and the countermeasures, introduces the related international and domestic specifications, Finally, the development trend of 5G Network slicing is prospected.

Key words: 5G Network slicing, application, security, specification