Test of ice ingestion aeroengine is a verification item that must be passed by airworthiness certification. Ice-slab ingestion is an important part of it, which is to verify the strength of aeroengine under the expected ice absorption conditions, and is an important guarantee for the safe operation of aircraft. Based on the requirements and principles of aeroengine ice ingestion test, a rotating ice projection test model is established, and the speed composition of the device is analyzed, and the aeroengine ice-slab input device is developed. The device is of horizontal structure, mainly composed of frame, rotating power system, release power system, rotating arm, protection mechanism, release mechanism, ice-slab box mechanism, guard plate structure, computer control system, operation panel, etc. The rotating arm mechanism provides stable impact velocity for ice-slab; The quick change ice-slab box mechanism realizes the rapid replacement of different specifications of ice-slab, and meets the test of ice ingestion requirements of different types of aeroengine; According to the field test, it is showen the flight attitude of ice-slab is stable, and it can hit the target point with the thickness side; The target impact test proves that the ice-slab projected by the device can impact into the effective calibration area, and the newly developed device can meet the requirements of test of ice ingestion in the airworthiness regulations of aeroengines at home and abroad.