The problem of air quality is worth discussing and solving. However, harmful gases produced by industrial production, household stoves and vehicles are still affecting people's respiratory health. Moreover, the new coronavirus is also a safety hazard hidden in the air. In order to further strengthen the intensity of air purification, "AIR" can be fixed on the handle beam to purify the incoming air when people ride, so that users can inhale pure and safe air. As more and more people install "AIR" on their bicycles ". The air quality of the entire earth will gradually improve.