The invention relates to a pressing rate testing device. A tubular hollow permeable cylinder is place on a horizontal bottom plate. The permeable cylinder is formed in a mode that an inner cylinder and an outer cylinder are sleeved. Both upper and lower ends of the permeable cylinder are open ends. The inner cylinder is provided with a filter screen cylinder wall. The outer cylinder is provided with a steel plate cylinder wall which is uniformly provided with permeable holes. A columnar bottom plug is arranged inside the lower end of the permeable cylinder. A material to be tested is filled above the bottom plug. A columnar top plug is covered on the material to be tested. The top plug is positioned in the permeable cylinder. A top plate is placed in parallel to the bottom plate and above the permeable cylinder. Supporting screw rods are vertically configurated between the top plate and the bottom plate. Nuts are arranged in the supporting screw rods. The lower ends of the supporting screw rods are fixed on the bottom plate. The upper ends of the supporting screw rods pass through the top plate. The top plate is arranged on the nuts. A compressing cylinder is vertically fixed on the top plate. A cylinder piston rod passes through the top plate downwards. A pressing head is fixed at the lower end of the piston rod. The pressing head is aligned with the top plug in the permeable cylinder. One device can be utilized to complete testing of a pressing rate of the material under the conditions of different pressure values and different container through hole rates only by replacing the inner cylinder and the regulating a pressure regulating valve, and is convenient to use.