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The height restrictions on skyscrapers are not merely a matter of construction technology; an important factor is the limitation imposed by the lifting capacity of elevators. Thus, elevators are not only means of transportation but also symbols of human civilization, and the development of their technology reflects societal progress and civilization. With the development of computer technology, communication technology, and control technology, the intelligentization of buildings has become a reality. Elevators are important means of transportation in intelligent buildings, and their technological advancements as well as the degree of intelligence they possess attract considerable attention worldwide. Intelligent elevators must first be connected to all the automated systems in smart buildings, such as building control systems, fire protection systems, and security monitoring systems, so as to function as efficient, high-quality, safe, and comfortable service tools. Serial communication is increasingly used in elevator control systems due to its advantages of simple wiring and the ability to transmit large amounts of data; by eliminating the numerous input and output circuits on microcomputer interface boards, it reduces the amount of wiring required in the shafts and machine rooms, thereby improving reliability. With the increasing level of intelligence in buildings, fieldbus technology has now begun to be applied in elevator control systems as well as in a building’s BAS, FAS, and SAS. From the perspective of intelligent control of elevator operation, elevators are required to provide high-quality service. Advanced scheduling rules should be employed in the control program to ensure the optimal elevator dispatching mode for group control management. In modern swarm control algorithms, the goal is no longer solely based on minimizing passenger waiting time; instead, methods such as fuzzy theory, neural networks, and expert systems are employed to incorporate the various factors that need to be taken into account (i.e., expert knowledge) into the swarm control system. Among these factors are those that affect passengers’ psychology, as well as those involved in making evaluation decisions regarding what is about to happen; it is a multi-objective control system that combines expert systems with the elevator’s current operating status. The elevator’s voice announcements and information displays can provide thoughtful service. Genetic algorithms are used to optimize passenger flow patterns and elevator assignment rules, enabling the evolution of elevator scheduling rules in order to adapt to changes in the environment. “An elevator control system designed with a people-oriented approach will improve the quality of service provided by elevators. The problem of people getting trapped in elevators has long been a concern for elevator contractors. As early as the 1980s, elevator manufacturers began to install process monitoring systems in elevators, namely camera and communication systems within the elevator car, allowing passengers trapped inside to establish contact with the building’s surveillance staff. Since such facilities are limited to the building where the elevator is located and are managed by security personnel, in the event that someone gets trapped in the elevator, it is necessary to call professionals to rescue them. The remote monitoring service system proposed now represents an advancement over traditional remote surveillance systems. This advanced device integrates communication functions, fault diagnosis capabilities, and microprocessors; it can transmit information regarding the elevator’s operation and any faults over regular telephone lines to a remote service center (that is, a remote elevator monitoring and maintenance center), allowing maintenance personnel to know what the problems are and how to address them. If the car gets trapped on a floor due to a door malfunction, the remote maintenance center can, after assessing the situation, authorize the use of remote control to open the car doors and floor doors, allowing those trapped to exit the car without the need for maintenance personnel to be on site. If a fault can only be resolved by having maintenance personnel go to the site, the center immediately plays soothing audio messages in the cabin to reassure the people trapped inside and relieve their anxiety. After installing remote monitoring for escalators, in addition to being able to monitor their operation, the maintenance control center can take immediate action to stop them in case of an emergency, thereby preventing injuries. The benefits of remote services for users are obvious; remote monitoring of elevators not only provides users with access to a specific component but also offers them a complete set of services. The remote maintenance monitoring center keeps an eye on the elevators under its care at all times, allowing it to know the operating status of the elevators as well as the nature of any faults that occur. Maintenance technicians know exactly what needs to be fixed before they go to the faulty elevator, which reduces the costs and time associated with maintenance services. This type of preventive maintenance approach is highly trusted by users abroad, and it represents an important direction for the development of elevator technology in our country as well. From the perspective of environmental pollution, the new concept of \"green\" will become the dominant theme of the 21st century. A global green market offers vast opportunities for corporate development; those who introduce green products first and seize the green marketing market in the 21st century will gain the upper hand in competition. Elevator energy consumption accounts for approximately 3% to 7% of the total energy consumption of a building, and it is related to the building’s functions, the height of the floors, the area, as well as the volume of traffic. There are various measures to reduce elevator energy consumption. It mainly includes: the full utilization and recycling of raw materials ； Select an efficient drive system, and optimize the number of elevators and their parameters ； Reduce the inertia and frictional resistance of the elevator mechanical system ； Make proper use of counterweights and balance weights ； The layout of entrances and exits, the planning for passenger flow and cargo transport, as well as the use of energy-efficient lighting – all these need to be carefully optimized and determined in advance during the elevator design process. In a group elevator arrangement with fewer stops, having one main machine drive two cars to move up and down separately is an energy-saving solution. Another way to reduce energy consumption is energy control during the operation of elevators. By taking advantage of the fact that the motor operates in a power-generation mode when the elevator moves upward with no load and downward with a full load, the regenerative energy is fed back into the power grid; this energy-saving measure is particularly effective in high-speed elevators. Another energy-saving solution will be implemented through software control. For example, in a traffic control system with real-time monitoring, efforts should be made to transport more passengers with fewer trips, thereby minimizing the number of stops the elevator makes. The passenger registration system at floor entrances that integrates elevator calls with car commands is a revolutionary technology in elevator control; it makes it clear what floor passengers intend to go to at each floor, thereby maximizing the efficiency of the elevator dispatching system. Another measure to reduce energy consumption during operation is to set the acceleration and deceleration patterns of the elevator as variable parameters; that is, the curves representing speed, acceleration, and the rate of change of acceleration in the elevator control system vary both with the distance traveled and with the load in the car. Through simulation software, the optimal operating curves between different floors were determined. Taking advantage of the location of the elevator machine room on the roof to make full use of solar energy as a supplementary power source for elevators will also be a new area of research. In addition to minimizing pollution from elevator oils (hydraulic oil, transmission oil, lubricants, etc.), another issue is the study of electromagnetic compatibility in elevators. Since the elevator is the only large-capacity electrical appliance that operates frequently in the building, it is the source of electromagnetic interference. The electromagnetic radiation generated by the electrical and electronic devices in the elevator will affect the office equipment in the building, such as radios, televisions, computers, cordless phones, etc. Additionally, elevators should also not be affected by electromagnetic radiation in the environment. In particular, the safety circuits of elevators should have reliable isolation measures. At present, the European Community has established CE standards for electromagnetic immunity; in wireless environments, within a frequency range of 30 MHz to 230 MHz, the allowable radiation level is 30 dB over a distance of 30 meters ； It is 40 dB within a range of 3 to 10 m. In a wired transmission environment, its radiation level is related to frequency and current. If the current is not greater than 25A and the frequency range is between 0.15MHZ and 0.50MHZ, the maximum allowable radiation level is 79dB. It is believed that with the advancement of elevator technology, elevators that are fast, efficient, intelligent, and environmentally friendly will surely be able to provide better services to humanity. Gearless design, machine-roomless architecture, electromagnetic compatibility, and remote monitoring technologies will be the main areas of research in the elevator industry in the coming years.