Core technical advantages: First, real-time remote collaboration, maintenance personnel wear AR smart glasses to transmit the on-site picture in real time from the first perspective, and remote experts can see the on-site situation synchronously, realizing "what you see is what you get" remote guidance; Second, AR visual annotation, experts can carry out 3D annotation, arrow guidance, and text description in the real-time picture. The annotation information can be superimposed in real time following the equipment position, and on-site personnel can intuitively see the operation points to avoid misoperation; Third, 3D model disassembly guidance, built-in 3D model of all elevator components, which can be disassembled, enlarged, rotated in real time, showing the internal structure and assembly relationship, guiding on-site personnel to complete component disassembly, maintenance and replacement; Fourth, fault database linkage, the system has a built-in tens of millions of elevator fault case libraries, which can automatically identify the fault type, push the corresponding maintenance plan, operation steps, and precautions, even novice maintenance personnel can get started quickly; Fifth, full process record archiving, the maintenance process is fully recorded, maintenance reports are automatically generated, stored in the full life cycle file of the elevator, traceable and reviewable, and used for skill training of maintenance personnel.