A filter press, comprising a frame, and a power component, a plurality of filter plates and a vibration cake unloading device arranged on the frame, wherein the filter press is configured such that:: the filter plates are driven by the power component to move to and from along the frame to be at a pressure filtration position and an unloading position; and the vibration cake unloading device comprises a driving component and a vibration shaft arranged longitudinally, protrusions are provided on an outer circumferential wall of the vibration shaft, when the filter plate is located at the unloading position, in the process that the driving component drives the vibration shaft to rotate around its own axis, the protrusions on the vibration shaft collide with the filter plates to assist in unloading; and characterized in that: the power component comprises an oil cylinder and an auxiliary power component; in a longitudinal direction, all the filter plates are divided into a first part of filter plates and a second part of filter plates, and the oil cylinder drives all the filter plates to be at the pressure filtration position; when the oil cylinder retracts to a fully retracted state, the filter plates in the first part of the filter plates are pulled apart by a predetermined distance to form an unloading space; and the auxiliary power component drives adjacent filter plates in the second part of filter plates to be pulled apart by a predetermined distance to form an unloading space, and meanwhile a distance between the filter plates in the first part of the filter plates decreases. the filter plates are driven by the power component to move to and from along the frame to be at a pressure filtration position and an unloading position; and the vibration cake unloading device comprises a driving component and a vibration shaft arranged longitudinally, protrusions are provided on an outer circumferential wall of the vibration shaft, when the filter plate is located at the unloading position, in the process that the driving component drives the vibration shaft to rotate around its own axis, the protrusions on the vibration shaft collide with the filter plates to assist in unloading; and characterized in that: the power component comprises an oil cylinder and an auxiliary power component; in a longitudinal direction, all the filter plates are divided into a first part of filter plates and a second part of filter plates, and the oil cylinder drives all the filter plates to be at the pressure filtration position; when the oil cylinder retracts to a fully retracted state, the filter plates in the first part of the filter plates are pulled apart by a predetermined distance to form an unloading space; and the auxiliary power component drives adjacent filter plates in the second part of filter plates to be pulled apart by a predetermined distance to form an unloading space, and meanwhile a distance between the filter plates in the first part of the filter plates decreases. the power component comprises an oil cylinder and an auxiliary power component; in a longitudinal direction, all the filter plates are divided into a first part of filter plates and a second part of filter plates, and the oil cylinder drives all the filter plates to be at the pressure filtration position; when the oil cylinder retracts to a fully retracted state, the filter plates in the first part of the filter plates are pulled apart by a predetermined distance to form an unloading space; and the auxiliary power component drives adjacent filter plates in the second part of filter plates to be pulled apart by a predetermined distance to form an unloading space, and meanwhile a distance between the filter plates in the first part of the filter plates decreases.