The utility model provides a coal petrography body many reference amounts monitoring test device based on under true triaxial loading, includes pressurized chamber, four levels and a vertical stress loading hydro -cylinder, be equipped with four horizontal stress loading holes on the pressurized chamber lateral wall, be equipped with vertical stress loading hole on the bottom plate, be equipped with sample loading and unloading clearing hole and detachable sealed apron on the roof, the downthehole stress loading depression bar that all is equipped with of each stress loading, both sealed sliding fit, inner and the sealed apron lower surface of depression bar all is equipped with the pressure head, and the pressure head side surface is equipped with transmitting sensor, and the pressurized chamber internal surface is equipped with the sensitive nickel cobalt pole piece of little electricity, it answers force transducer to be equipped with between stress loading depression bar and the oil cylinder piston rod, be equipped with a rigid connection section of thick bamboo between hydro -cylinder cylinder body and the pressurized chamber outer wall, install grating sensor between a stress loading depression bar and the rigid connection section of thick bamboo, the signal transmission socket is installed to the pressurized chamber lateral wall, is equipped with electric signal transmission interface and acoustic emission signal transmission interface on the socket respectively, the pressure head does not set up a plurality of groups according to unidimensional.