Abstract: The "last kilometer" of the Power Internet of Things refers to the interface and service extension that directly connects with the end user.It is an important construction content for power grid companies to realize digital transformation.Therefore, it will be an absolutely important work to strengthen the information construction of effective access to Power Internet of Things.However, the existing communication access faces challenges such as complex networking technologies, different standards and extremely low utilization of communication links.Based on this, this paper firstly summarizes the research status of Power Internet of Things access technology, Time-Sensitive Network（TSN）,and Information-Centric Networking（ICN） is summarized.The existing problems and challenges are analyzed.Then aiming at the existing problems in the multi-source information access technology of the Power Internet of Things, this paper proposes a set of detailed research scheme.It combines Time-Sensitive Network and Information-Centric Networking to build a new multi-source information access method of the Power Internet of Things.It lays a solid foundation for the ultimate realization of ubiquitous interconnection of massive business in the Power Internet of Things, and efficient transmission of power data.Finally, this paper discusses the application of the multi-source information access technology based on the Information-Centric Networking in the access to the emerging business requirements of power communication.