The invention discloses a centrifugal filter. According to a key point of the technical scheme, the centrifugal filter comprises a rotating drum and a spiral conveyor arranged in the rotating drum and is further provided with a differential transmission mechanism for driving the rotating drum and the spiral conveyor to rotate, a propulsion chamber is formed between the outer wall of the spiral conveyor and the inner wall of the rotating drum, the rotating drum is provided with a solid discharging port, a sealed distribution chamber is arranged in the spiral conveyor, a feeding port is communicated between the distribution chamber and the propulsion chamber, the distribution chamber is connected with a feeding pipe, an extraction device is arranged in the spiral conveyor and connected with an extracting pipe, and a plurality of first openings are arranged in the spiral conveyor and provided with filtering layers. The centrifugal filter has the advantages that suspended particles suspended in clarified liquid and even extremely small molecules can be effectively separated, the purity degree of the clarified liquid is improved, a pretreatment process is omitted, a filtering separation effect is improved, and consumables and manpower cost are saved.