Aiming at the problems of difficult time coordination and high cost of the aerodynamic noise test of counter-rotating propellers in wind tunnels, the aerodynamic noise test system of counter-rotating propellers, which is capable of simulating the driving state of counter-rotating propellers on the ground, has been developed by relying on the acoustic environment of the ground. The aerodynamic noise test was carried out on a perforated counter-rotating propeller and a reference propeller to validate the test system and evaluate the noise reduction effect of the perforated counter-rotating propeller, and the results show that the perforated counter-rotating propeller can effectively reduce the noise under the prerequisite of guaranteeing the aerodynamic performance in the range of the tested working conditions. In the 90° pointing angle, which has the most significant effect on the aircraft cabin, the noise reduction at the second-order passing frequency reaches 5dB.The designed aerodynamic noise test system can provide assistance for the evaluation of aerodynamic noise of the rotary propeller and the design of noise reduction.