With the rapid development of Internet of Things technology, smart home system has become one of the hotspots of research and application. In this context, this paper proposes a smart meter system design scheme based on the Internet of Things technology, aiming to realize the efficient management and use of household electric energy. The system consists of four parts: smart meter, data collection unit, control center and user interface. The smart meter is responsible for real-time monitoring and recording of power usage, and the data collection unit is responsible for sending the collected data to the control center, which analyzes and processes the data, and finally displays the power usage to the user through the user interface and provides energy-saving suggestions. The system uses wireless communication technology to realize the communication between the meter and the data collection unit, and uses cloud computing technology to store and analyze a large amount of data collected to support the remote monitoring, data analysis and fault warning of the use of electric energy. In addition, the design also considers the problem of data security, and adopts encryption technology to ensure the security of data transmission. After testing, the smart meter system can accurately monitor and record the home power consumption, users can remotely view the power consumption report through mobile phones or computers, and the system can also provide energy-saving suggestions according to the power consumption, which helps users save electricity and realize the efficient use of home power.