The invention discloses a true triaxial fracturing test device, which comprises a loading assembly, a fracturing pipe and an injection pump. The fracturing pipe comprises a first connector, an adapterpipe and a second connector, which are communicated. The first connector is embedded in a fracturing hole in a test sample, one end close to the test sample is fixedly connected with a first fracturing pipeline, and the other end is detachably connected with the end portion of the adapter pipe; the other end of the adapter pipe is detachably connected with the second connector; the end portion ofthe second connector is fixedly connected with a second fracturing pipeline; and the other end of the second fracturing pipeline is communicated with the injection pump. The test device is fast and convenient to assemble and disassemble, can be reused and meets the requirement of arranging fracturing shafts on different side surfaces of the test sample simultaneously.