On September 18, 2025, the International Electrotechnical Commission (IEC) officially issued the revised international standard IEC 60364-7-729:2025 Electrical installations of buildings — Part 7-729: Electrical installations for lifts, escalators and moving walks, adding a special technical specification for elevator emergency rescue systems, which is the core unified guideline in the field of global elevator emergency rescue. The core contents of this standard revision include: First, clarify the general design requirements of the elevator emergency rescue system, covering the technical standards of the whole process of emergency alarm device, emergency lighting, emergency power supply, manual rescue and remote rescue, to ensure the rescue reliability of elevators in extreme scenarios such as power failure, fault and fire. Second, standardize the mandatory requirements of the elevator emergency alarm device, clarifying that the emergency alarm device must have the functions of two-way voice call, one-key call, and 24-hour effective response, and the standby power supply has a battery life of no less than 4 hours, adapting to the use needs of people with visual and hearing impairments. Third, refine the design standard of the elevator emergency power supply system, clarify the mandatory requirements for the capacity, switching time and battery life of the emergency power supply, to ensure that the elevator can automatically level and open the door in case of failure, and ensure the safe evacuation of trapped personnel. Fourth, formulate the technical specifications of the elevator manual rescue device, clarify the design, installation and operation requirements of the manual brake release and manual turning device, to ensure that rescue personnel can carry out manual rescue operations safely and quickly. Fifth, add the technical requirements of the elevator remote emergency rescue system, standardize the safety design standards for remote monitoring, remote leveling, and remote fault diagnosis, to prevent the network security risk of remote rescue. Sixth, clarify the test and verification standards of the elevator emergency rescue system, and formulate the process, methods and judgment criteria of laboratory testing, on-site testing and regular inspection. After its release, the standard has been adopted as a national standard by many countries and regions around the world such as the European Union, China, the United States and Japan, comprehensively improving the safety level of global elevator emergency rescue.