In order to explore how the intelligent building can realize the integrated wiring system, the author proposes an integrated wiring system for the intelligent building based on the Internet of Things. This method recommends key technical problems and solutions based on the information represented by the Internet of Things and explores the research on the realization of integrated wiring systems in intelligent buildings. Research has shown that the integrated wiring system of intelligent buildings based on the Internet of Things can solve the shortcomings of traditional buildings, and the happiness index of occupants has increased by about 15%. In the future, a building will be a platform, and each building will be an IoT unit and a cell body, making the Internet of Buildings possible and building a big data platform for the Internet of Buildings.