Cars have become an indispensable travel tool in people's lives, and the comfort of the interior space has been paid more and more attention. During long-term driving, peculiar smells are easily generated in the car, and the dull air will make the drivers and passengers feel uncomfortable and reduce the driving experience. At the same time, with the awareness of environmental protection and energy conservation gradually gaining popularity, solar energy, a clean energy source, has been widely used in various fields with its renewable and pollution-free advantages. In this context, solar car aromatherapy came into being, aiming to provide car owners with convenient, environmentally friendly and efficient in-car fragrance solutions.