The invention discloses a multi-field coupling monitoring and testing device for coal rock and belongs to the technical field of mining. The multi-field coupling monitoring and testing device comprises a base, a testing cavity body, an axial-pressure applying system, a confining-pressure applying system, a pore flowing-pressure simulation system, a temperature applying system, a charge acquisitionsystem, an acoustic emission signal acquisition system, a strain acquisition system and a data acquisition and analysis device, wherein the testing cavity body comprises a steel pressure-resistant cavity and a sealing flange disc, a transmission rod is arranged at the middle part of the sealing flange disc, and an upper pressing head and a lower pressing head are arranged in a sealed space formedby the steel pressure-resistant cavity and the sealing flange disc; the pore flowing-pressure simulation system comprises a first pore flow-pressure port formed in the upper pressing head, a second pore flow-pressure port formed in the lower pressing head, a first flowing-pressure transmission hole and a second flowing-pressure transmission hole formed in the sealing flange disc, a flow meter anda flowing-pressure applying system; the temperature applying system comprises an electric-control heating belt wound on the surface of a thermoplastic sleeve; and the axial-pressure applying system comprises an axial hydraulic cylinder and a pressure sensor.