The invention discloses a rotating mechanism of a ceramic edge-scraping device. The rotating mechanism comprises a base, a first placement groove is formed in the base, and the bottom of the inner wall of the first placement groove is fixedly connected with a vertical rod through a bearing. The top of the vertical rod penetrates into the top of the base to be fixedly connected with a working table, and a gear is fixedly connected to the surface of the vertical rod. According to the rotating mechanism of the ceramic edge-scraping device, through the matching use of the base, the first placementgroove, the vertical rod, the working table, the gear, an air cylinder, a support plate, a movable rod, a support rod, a movable plate, a movable hole, a tooth plate, a vertical plate, a groove, a cross bar, scrapers, a second placement groove, a spring and a clamping block, the problem of uneven edge scraping caused by burrs which are prone to being generated due to the fact that an existing edge-scraping device can only perform edge scraping and finishing in the same direction when edge scraping is solved, and the rotating mechanism of the ceramic edge-scraping device has the advantage of even edge scraping and improves the practicability of the edge-scraping device.