Residential load is widely distributed and the monomer capacity is small, but the proportion of total energy consumption on the occupied demand side has gradually increased recently. Meanwhile, the rapid development of Internet of things technology provides the possibility of fine regulation of residential load. In order to open up the refined and friendly interaction channel between distribution system operators and residents, this paper proposes an edge-end coordinated aggregated residential load demand response (DR) system. Firstly, the design framework, software, hardware and functions of the system are described, and then two applications of NILM and residential DR and their actual operation effects are introduced. The system realizes the localized storage and analysis of residential privacy data, and realizes the mining of residential DR potential.