The intelligent inspection robot system of converter station takes wheeled robot and rail-mounted robot as the core, with the fixed point double viewing head, it can achieve three-dimensional and full-coverage monitoring of various indoor, outdoor, ground, air equipment and environment of converter station. It can improve the automation and intelligence level of on-line monitoring for ultra-high voltage converter station. The system uses machine control, infrared diagnosis, intelligent video analysis, data processing and interaction technology to carry out all-round, fully autonomous detection and intelligent diagnosis of the indoor and outdoor equipment in the converter station, so as to ensure the safe operation of the converter station.