Abstract: Ubiquitous power Internet of Things (UPIoT) is of significance for green and healthy development of China’s power grids in future. To expound the meaning of UPIoT more clearly, firstly, the concept, construction goals and existing problems of UPIoT were analyzed in detail. Secondly, the technologies such as big data, cloud computing, blockchain and artificial intelligence, as well as their applications in power system were researched. Finally, the application scenarios of UPIoT were summarized and analyzed, and relevant suggestions for future development of ubiquitous power Internet of Things were proposed.