The invention discloses a communication machine room. The communication machine room can comprise a spare communication region, reservation equipment and a primary communication region, wherein the spare communication region is arranged adjacent to the primary communication region and used for placing a spare communication line and spare communication detection equipment; the reservation equipmentcomprises a communication power supply, cable distribution equipment, IP multimedia subsystem (IMS) equipment, transmission equipment and a server; the primary communication region is used for placing the reservation equipment, the primary communication region comprises multiple subregions, and a preset distance is kept between every two adjacent subregions; and the spare communication detectionequipment is used for detecting whether the communication power supply in the reservation equipment is in fault or not, and when a detection result shows that the communication power supply in the reservation equipment is in fault, the spare communication line is controlled to be connected with the primary communication zone in series, so that normal communication in the primary communication region is realized. The communication machine room disclosed by the invention solves the technical problem that reliability of a communication site is relatively low as arrangement of the communication site is unreasonable in related technologies.