The invention discloses a turntable filter which comprises a main framework, a core filtering system filtering net, a driving system, a backwash system and an automatic control system, wherein the main framework consists of a shell, a central water inlet pipe, a roller, a toothed gear, a rotating bearing, a central drum and a sealing piece; the driving system comprises a driving motor, a driving gear and a roller supporting wheel; and the backwash system comprises a reverse cleaning pump, a backwash sprayer, a flushing water pipe, a nozzle system, a sewage collecting groove and a blow-off line. Compared with the traditional process, the turntable filter has the advantages that the civil engineering such as a blowing room, a lifting pump room, a chlorination room, a clean-water reservoir and a settling pond are saved, the occupied area is small, and the occupied area of 10000-tonnage water is 15 square meters only and is only 1/7 to 1/6 of the area occupied by the traditional process, so that the maintenance and repair of the equipment are simple and convenient, the operating automation degree is quite high, special care is not required, and the labor intensity of workers and the maintenance cost are greatly reduced.