Visual true triaxial loading and unloading seepage test equipment for clay rock

The utility model provides visual true triaxial loading and unloading seepage test equipment for clay rock. The visual true triaxial loading and unloading seepage test equipment comprises a loading and unloading system, a fluid permeation system and a visual monitoring and control system, the loading and unloading system comprises a confining pressure device, a normal pressurizing device and two transverse pressurizing devices, the confining pressure device is internally used for placing a rock sample, an upper through hole is formed in the top, side through holes are formed in the left and right side faces respectively, and the lower end of the normal pressurizing device penetrates through the upper through hole, is located in the confining pressure device and is used for applying normaldownward pressure to the rock sample; the two transverse pressurizing devices are arranged on the left side and the right side of the rock sample, and one ends penetrate through the side through holesto be located in the conf