Automobile-used device with sight improving function

The invention relates to an automobile-used device with a sight improving function. The automobile-used device comprises a microprocessor and a driving motor, and further comprises a raindrop sensor, a timer and a polarizing glass element, wherein the raindrop sensor is used for judging whether rain falls or not; the microprocessor is used for controlling the automobile-used device to work; the timer is used for assisting in judging whether rain comes or not; the driving motor is used for controlling the polarizing glass element to lift; the polarizing glass element is used for improving the sight of a user. Through the adoption of the technical scheme, even if an automobile runs in heavy rain, the user has a relatively clear visual field, so that potential safety hazards caused by driving in rainy days are reduced.