Abstract: At present, with the continuous development of China's social economy, green energy-saving technology has become an important part of building electrical design, and received more and more attention. However, there are many problems in the electrical design of buildings in China at present, and with the continuous increase of energy demand, the energy consumption is also greatly increased, which will lead to the restriction of social development due to energy shortage to a certain extent. Based on this, it is necessary to continuously optimize the relevant system circuits and implement the green energy-saving technology in the distribution system to strengthen the scientific and rational application of renewable energy.