The invention discloses an aircraft power system test device comprising a test platform, a pull rope, and an aircraft physically connected to the test platform through the pull rope, wherein the testplatform is provided with a pull test device, a pull ring is provided on the top of the pull test device and is sleeved with one end of the pull rope, and the other end of the pull rope is fixed to the lower surface of the aircraft; the test platform further comprises an infrared positioning device, a distance test device, an airflow detection device, a display device, a wireless communication device and a motion recognition device. The invention provided with the airflow inspection device, the distance test device and the infrared positioning device can eliminate the influence of airflow, distance position and force direction on the pulling force of the aircraft during the test.