This paper briefly introduces the overall structure of aircraft-engine test cell and the thrust measurement method of engine installed on aircraft., the thrust measurement system and calibration method are described in detail. It analyzes the influence factors of the aircraft-engine thrust measurement, the correction methods of the measurement results and the shortcomings of the current calibration methods. Several improvement measures such as installation calibration, left and right platform joint calibration, servo loading calibration and in situ calibration are proposed, the calibration accuracy of aircraft-engine thrust measurement system and the measurement accuracy of engine installed thrust are improved. For other similar equipment calibration also has important reference and reference value.