The utility model relates to a communication system for video-monitoring-based intelligent inspection of power transmission lines. The communication system comprises a plurality of intelligent data controller disposed on power transmission towers, wherein each intelligent data controller is connected with at least two 5.8G wireless bridges and at least one video data acquisition device; and every two adjacent intelligent data controllers are in wireless connection through a 5.8G wireless bridge. The communication system for video-monitoring-based intelligent inspection of power transmission lines uses a plurality of cascaded intelligent data controllers, wherein the 5.8G wireless brides connected with the plurality of intelligent data controllers form a cascaded 5.8G high-frequency data network; the intelligent data controllers are connected with a background monitoring system through the cascaded 5.8G high-frequency data network, and the video data acquired by the video data acquisition device is transmitted to the background monitoring system. Therefore, video data transmission in the inspection of the power transmission lines is realized, and the video-monitoring-based intelligent inspection of power transmission lines is realized.