The invention relates to the field of sludge treatment devices, in particular to a forcedly discharging press filter. The forcedly discharging press filter comprises a stander, a press filtering apparatus, a compression apparatus and a forcedly discharging apparatus, wherein the press filtering apparatus comprises a plurality of filtering frames and filtering plates, the inner side and the outer side of each filtering frame are hinged with a connecting ring, the connecting ring is provided with a waist-shaped hole, a limiting column is fixedly installed above a hinge shaft, the connecting ringof a front filtering frame sleeves the limiting column of the following filtering frame by virtue of the waist-shaped hole, the compression apparatus is arranged on the other end of the stander and comprises a compression air cylinder mounting seat which is fixedly installed on the stander, a compression air cylinder which is fixedly installed on the air cylinder mounting seat and a compression plate connected with a connecting rod of the compression air cylinder, the forcedly discharging apparatus comprises an air cylinder fixedly installed on the stander and a discharging frame driven by the air cylinder to move up and down, the discharging frame comprises a top plate, a left side plate and a right side plate, and the inner sides of the left side plate and the right side plate are respectively and fixedly provided with a discharging brush. The forcedly discharging press filter is simple in structure, convenient and labor-saving in operation and capable of forcedly making a mud cakedrop.