The air in the cabin of civil aircraft is replaced once every 2-3 minutes, and the aircraft ventilation system mainly circulates up and down, rather than front and rear, which reduces the possibility of virus spread. In addition, the Civil Aviation Authority has also required aircraft to use maximum ventilation in flight and increased the frequency of cabin disinfection. The aircraft is equipped with emergency equipment for epidemic prevention, as well as non-metallic body temperature testers, and flight attendant training has also been strengthened to properly handle passengers with fever while protecting their own safety.