The invention discloses a ceramic filter which comprises a rack, a drum and a plurality of disc-shaped filtering devices mounted on the drum and uniformly distributed along the axial direction of the drum. Each disc-shaped filtering device comprises a plurality of ceramic filtering plates uniformly distributed along the peripheral direction of the drum, scraping plates are arranged on two sides of each disc-shaped filtering device, a mounting seat is arranged at a position, close to each disc-shaped filtering device, of the rack, and one end, away from the corresponding disc-shaped filtering device, of each mounting seat is hinged to the rack while the other end, close to the corresponding disc-shaped filtering device, of the same is detachably connected with the rack; the scraping plates on the two sides of each disc-shaped filtering device are mounted on the mounting seats adjacent thereto, the middle of each scraping plate is hinged to the corresponding mounting seat, and a compression spring is arranged between the lower portion of each scraping plate and the corresponding mounting seat. During demounting of the scraping plates, the mounting seats can be pulled up directly depending on the ends, hinged to the rack, of the mounting seats, and the mounting seats which are pulled up enable the scraping plates to be away from the ceramic filtering plates, so that maintenance workers can demount and replace the scraping plates very conveniently.