With the expansion of the communication network, the communication equipment and power system in the telecommunications room have also grown exponentially, greatly increasing power consumption and electricity costs. Therefore, strengthening the control of production energy consumption in communication rooms and researching and promoting new energysaving and emission reduction technologies have important practical significance. Through the analysis of energy consumption and the significance of energy conservation and emission reduction in communication rooms, this paper explores the application of various energy-saving technologies in communication rooms from three aspects: power supply mode, dynamic environment monitoring, and ventilation and insulation. It also analyzes their applicable scenarios and energy-saving effects in order to achieve energy conservation and emission reduction.