Filter cloth filter press filter media, is to block the solid particles and filter plates in direct contact with the barrier. Once the filter cloth is damaged, solid particles will remain between the filter cloth and the filter plate during working. Under the action of pressure, the solid particles will accumulate to the outlet of the filter plate, resulting in the blockage of all or part of the outlet. Serious damage caused by the middle of the above filter plate will generally cause the filter plate near the outlet, due to solid particles with pressure, scouring the formation of grooves, undermining the sealing surface. Therefore, in the work, we should always observe the water outlet situation, unloading process, we must carefully check the filter cloth and found damaged to be replaced immediately, otherwise it will lead to serious consequences.