The airport, as a country’s gateway and window, not only facilitates economic exchanges but also plays a crucial role in international interactions. The safety of customs clearance around the airport has gained increasing attention from many countries. This study compares the effectiveness of using natural enemy audio bird repellent with traditional methods and finds that the former is more effective and avoids potential risks. Therefore, this paper proposes an audio bird repellent system for airport and surrounding clear air protection based on Raspberry PI, which achieves the same effect with less manpower while protecting the environment and reducing costs. This provides new ideas and references for future airport and surrounding clear air protection with broad application prospects