With the increasing global emphasis on sustainable development, green buildings are developing at an unprecedented pace. In smart and green building projects, security systems are not only the cornerstone of ensuring safety, but their energy consumption issues are also increasingly prominent. Traditional security systems, especially video surveillance systems, have shown an upward trend in energy consumption with the development of high definition and intelligence, and have become the top energy consuming part of building weak current systems. Industry insiders point out that in building construction, security systems usually account for about 5% of the total building cost. Therefore, in today's era where pursuing "energy conservation and environmental protection" has become the primary goal, how to reduce the energy consumption of security systems and improve user experience without sacrificing safety performance has become an important issue facing architects and security manufacturers. This requires the security system to incorporate energy-saving considerations from the beginning of design, optimizing from equipment selection, system architecture to daily operation and maintenance, making it truly a part of green buildings rather than a burden of energy consumption.