The filter cloth tensioning, vibration and discharge device uses a zigzag linkage mechanism installed on both sides of the upper middle part of the filter plate. The filter cloth is connected to the zigzag linkage mechanism through connecting rods, springs, hooks, etc. During the unloading process, as the filter plate is pulled apart, the filter cloth vibrates in the zigzag mechanism due to the stretching of the spring, helping the cake to peel off the filter cloth.