Abstract: How to connect the load management system and load equipment on the user side to the ubiquitous power Internet of Things (IoT) system is one of the urgent problems to be solved in the current power IoT construction. On the basis of analysis on the user-side device IoT system and the structure of meter reading system， referencing standards on smart grid and IoT by standard organizations such as the International Electrotechnical Commission (IEC)， this paper puts forward the user-side power architecture of IoT， which supports user-side load polymerization system， energy management system and automatic control system of user load to be integrated into ubiquitous power IoT. Taking the demand-response service as an example， this paper introduces the execution process of power grid interaction service in the user-side power IoT environment. At the same time， the paper proposes the standardization requirements of user-side IoT information exchange interface to meet the needs of information exchange in the process of power grid operation and demand-side management.

Key words: smart grid, user side, Internet of Things(IoT), cloud synergy, demand response