Due to the importance of energy in green buildings, one of the most critical solutions to achieve a sustainable environmental architecture that tries to cope with nature instead of overcoming it and use renewable energy instead of fossil fuels. Smart architecture and building systems can reduce energy consumption as well as provide desirable comfort to residents of green buildings. The widespread and growing need of the community for buildings and housing, the necessity of using new construction systems and modern materials to increase the pace of construction, light-weighting, increasing service life, and also buildings` retrofit against earthquakes have been proposed more than ever. Solving problems such as long run time, poor service life, high cost of building construction, environmental issues, and existing pollution in today’s cities requires public determination and fundamental changes in the type and use of materials, building systems, and architecture. The need to achieve such an ideal is to apply technology again to produce smart and new materials that guide the ecological behavior of the building toward smart energy management; this means the application of materials that best adapt to environmental changes. The use of smart materials reduces energy consumption in green buildings with a sustainable development approach that was reviewed and investigated using a descriptive-analytical method.