Abstract: This article take the practical application and practice of building Internet of Things (IoT) technology during the construction phase of a hospital project as an example. By analyzing specific application cases of IoT technology in construction management, safety monitoring, and equipment scheduling, the study reveals its significant role in improving construction efficiency, ensuring project quality, and enhancing safety. The research results indicate that building IoT technology enables real-time monitoring and data collection during the construction process, providing strong technical support for the development of smart construction sites. Furthermore, this paper discusses the challenges and future trends of IoT technology in the construction phase, offering valuable insights for related research and practice.