To reduce manufacturing and operating costs by reducing a mass of a movable part in a vibration testing system 10 and thus a required excitation force.

Two vertical vibration generators 12 are suspended from a ceiling slab 11, and a vibration table 13 is suspended and supported by the vertical vibration generators 12. Horizontal vibration generators 21 and 22 are further provided to vibrate the vibration table 13 from right and left and back and forth. An object 15 to be tested can be directly suspended and supported on the lower surface of the table 13, dispensing with a suspending tool. Thus, the mass of the movable part can be reduced, thereby reducing excitation force of the vibration generators. Further, the lower surface of the vibration table with such an area that the object can be put on will do, thereby reducing the mass of the vibration table itself and further the excitation force.