Abstract: In order to improve the panoramic perception and intelligent control level of the distribution network, this article proposes a construction plan for a smart distribution internet of things（IoT） cloud platform under the background of a new power system,and summarizes its application scenarios. The article elaborates on the relevant technologies and development status of the smart distribution IoT cloud platform, and reveals the problems difficulty to balance of existing distribution IoT cloud platforms between comprehensive state perception, efficient information processing, intelligent and concise decision analysis, and convenient and flexible application of functions. Taking the Xiong’an area as an example, this article proposes a construction plan and system hierarchical architecture for the smart distribution IoT cloud platform, and elaborates on the functions of the platform in 11application scenarios, such as distribution IoT applications, smart corridors, and intelligent switch stations. At the same time, the application value and future development direction of the cloud platform in the new power system are clarified. The study shows that the smart distribution IoT cloud platform can realize comprehensive monitoring and management of the distribution system, and improve the reliability and safety of system operation.