The invention provides a gas-lift valve test system. The gas-lift valve test system comprises a pressure measurement device, a displacement measurement device, a gas supply device and a control system. The pressure measurement device comprises a pressure storage tank and a pressure sensor, wherein the pressure storage tank and the pressure sensor are mutually connected. The displacement measurement device comprises a test barrel, a gas-lift valve and a displacement sensor, wherein the gas-lift valve and the displacement sensor are arranged in the test barrel and are connected. The gas supply device is connected with the control system. The gas supply device is also connected with the test barrel through the pressure storage tank and used for supplying gas to the test barrel through the pressure storage tank so that the gas-lift valve can generate displacement corresponding to pressure inside the pressure storage tank. The control system is connected with the pressure sensor and the displacement sensor respectively and used for receiving gas pressure collected by the pressure sensor and displacement, collected by the displacement sensor, of the gas-lift valve and processing the gas pressure and the displacement. The gas-lift valve test system realizes the effect that the performance index of the gas-lift valve is obtained completely through automatic control in a gas-lift valve test.