The construction industry is one of the important material production departments and pillar industries in China's national economy, and meanwhile, it is also a high-risk industry with frequent safety accidents. It is already an important research topic in the construction industry to strengthen construction site safety management, to reduce the frequency of accidents, to effectively manage the impact of construction on the environment, to eliminate all kinds of illegal operations and uncivilized construction, and to improve the quality of construction projects. Intelligent site is a concrete embodiment of the concept of Intelligent City in the construction industry, and it is a brand-new idea of project life cycle management. Intelligent site applies advanced technologies to achieve effective management on engineering safety, quality, economy and environment, including infrared thermal imaging fire monitoring and alarm system, dust and noise integrated detection system, BIM technology, VR safety experience system, spray system, intelligent inspection APP, intelligent weighing, UAV technology, hydropower wireless energy-saving monitoring system, and etc.