This machine is mainly for the test of compression and bending strength of cement. Using testing room of double-station, all the operations specified in GB/T17671-99 IDT ISO-R679:1989《Test Method of Cement Strength and GB17671-99 Test method for Strength of Hydraulic Cement Mortal 》, like compression and anti-folding strength, can be carried out in one machine. Serving two functions, the machine can save space, and is easy for operation and convenient for maintenance. This machine can realize special digit valve to get the automatic load at constant speed of compression and bending, computerized automatic control test and data processing, electronic dynamometry, color screen character menu display, force and loading curve tracing display, test data automatically storing, automatic printing of test report, long-time storage of data and consultation at any moment, and revise the test form according to customer's requirement. This machine is the updated model of YAW-300B, the constant loading cement pressure tester of large market share. Of mature technology and good reliability, it is an ideal choice for updating 300KN cement pressure tester. By assembling the clamp, it can also be used to carry out anti-bending and tearing test on concrete girder.