Abstract: In order to implement intelligent operation and maintenance of the traction power supply catenary in rail transit, as well as the refinement, digitization, and intelligence of self-propelled operation and maintenance equipment, this paper designed an integrated information platform of cloud-edge-terminal collaboration and evaluation-repair based on the business requirements of the catenary intelligent operation and maintenance system, which implemented the full process management of remote maintenance plan preparation, job safety monitoring, on-site terminal equipment control, data collection and analysis, and robot intelligent maintenance. It integrated subsystems such as control, detection, and maintenance through technologies such as single sign on and clock synchronization, and constructed a cloud-edge-terminal collaboration network system to implement fast dumping and secure transmission of cloud-edge data. This platform provides comprehensive support for intelligent operation and maintenance of catenary, improves the ability to handle major equipment failures, and ensures the safe and reliable operation of catenary.