Abstract: The traditional low-point monitoring in the Yangtze-to-Huaihe Water Diversion had a narrow vision field, poor anti-interference ability and lack of intelligent functions, which was unable to meet the requirements of building intelligent water conservancy.In this study, the communication tower was adopted as a carrier, and the intelligent monitoring equipment was employed in the key sections of the Yangtze-to-Huaihe Water Diversion to construct a high-low linkage intelligent video perception system.Among them, a AI model training platform was established by using artificial intelligence technology, and a number of video detection functions including regional intrusion detection and surface floating object detection were realized.The application practice showed that with the support of various intelligent algorithms, the high-low linkage intelligent video perception system significantly improved the alarm accuracy and intelligent recognition distance and provided effective assistance for the construction of the digital Yangtze-to-Huaihe Water Diversion.