Height adjustable sun visor

The utility model discloses a novel height adjustable sun visor, which aims to solve the problem that the sun shading effect of the common sun visor may is insufficient for a short driver or a short passenger. The utility model adopts the technical scheme that the height adjustable sun visor comprises an outer plate, a cavity is formed in the outer plate, an inner plate is placed in the cavity, and the inner plate is connected with the outer plate in the cavity in gliding way. Based on the original outer plate, the inner plate capable of sliding in the cavity is increased; and when the sunlight irradiates obliquely, the inner plate can be withdraw from the outer plate, and the purpose of shading the sunlight is fulfilled by adjusting the height of the inner plate. The height adjustable sun visor has simple structure, and is easy to manufacture, easy to control the height and convenient to use.