Abstract: In order to reveal the mechanism of coal or rock, based on one-dimensional stress wave theory, by using of computer technology, signal acquisition and filtering technology, new sensor technology, large diameter SHPB experimental device was developed, the Hopkinson pressure bar experimental equipment mainly consists of four parts, power system controlled by solenoid valve, the pressure rod system composing bullet, input rod, output rod and absorbing rod, record system that including the bullet speed test system, output rod and the input bar strain acquisition system and data processing analysis, SHPB software. The dynamic mechanical properties of coal and rock are tested by experimental device, the results were good.