The operation center of Xi'an Metro Line 4 adopts modern intelligent control theory, striving to create an intelligent, green, low-carbon, and environmentally friendly office environment. Its upper computer uses Tsinghua Tongfang's BMS integration platform with independent intellectual property rights. However, due to the independent operation of each BAS (Building Automation System) of the equipment control system, it was impossible to achieve collaborative work among various systems. To enable linkage and efficient collaboration between systems and realize linkage with the vehicle management system PRC, a true IBMS (Integrated Building Management System) operation platform was established, aiming to save labor, achieve efficient automatic operation, and conserve energy.