After nearly two decades of development, the Internet of Things (IoT) technology has not only been limited to people's conventional understanding of intelligence and Internet technology, but also organically integrated with artificial intelligence, distributed fiber optic sensing technology and wireless sensor network technology. At the same time, with the emergence of new fields and new technologies, the scope covered by the Internet of Things is becoming more and more extensive, and the field of intelligent buildings has just become the forefront of the application of Internet of Things technology. Therefore, it is of practical significance to deeply study the application and development challenges of the Internet of Things in the field of intelligent buildings.