The invention relates to a device capable of measuring limited filling pressure and displacement produced when a retaining wall rotates around a wall bottom. The device comprises a limited filling model box system, a system of the retaining wall rotating around the wall bottom and a PIV testing system. The testing device can truly simulate the natural stress state existing when the limited filling retaining wall rotates around the wall bottom, in other words, the soil stress state is the same as the soil state in the actual engineering. According to the testing device, high-precision soil pressure sensors are arranged on the retaining wall at equal height intervals, so that the limited filling soil pressure can be measured in real time; and a high-precision camera is arranged in right front of the model box, and meanwhile the PIV technology is adopted, so that a soil displacement image produced in the whole process when the retaining wall rotates around the wall bottom is measured in real time. According to the model testing device, operation is convenient, and related instruments are simple in structure and easy to master.