Multifunctional true triaxial flow solid coupling test system

The invention discloses a multifunctional true triaxial flow solid coupling test system which comprises a frame (100) and a pressure chamber (200) capable of arranging a coal rock sample, wherein the frame (100) comprises a support (1); the support (1) is fixedly connected with a frame (2), and a pressurizing system and a sensing system which are independent are arranged in each of X, Y and Z directions of the pressure chamber. Therefore, according to the multifunctional true triaxial flow solid coupling test system, a real work condition can be really simulated, and a theoretical basis is provided for solving on-site problems.