The invention relates to the technical field of filters, in particular to a novel plate filter, comprising a shell, a filter plate part disposed in the shell, and a smoke inlet and a smoke outlet arranged respectively at left and right ends of the shell; the shell is of square box structure and comprises channel steel and sealing steel plates, the channel steel is fixedly connected with the sealing steel plates, and the bottom of the shell is provided with a plurality of ash outlets; the filter plate part comprises a filter plate and supports disposed on two sides of the filter plate, the filter plate is inclined to the supports, and the filter plate and the supports are of thread-locked structure; the structure with adjustable filter plate angle is used first, it is possible to change the angle of the horizontal plate and the horizontal direction during actual operation to adjust collision area between dust and tar particles, thus adjusting dedusting efficiency; the filter plate releasable structure is used, facilitating reuse of the filter plate with the tar and dust removed.