A vehicle headlamp system, comprising a light source, a primary optical element (1), a vehicle signal lamp light-transmitting structure and a secondary optical element (2), which are sequentially arranged in a light-emergent direction. The vehicle signal lamp light-transmitting structure comprises a light-transmitting portion and a rotating shaft (31). The light-transmitting portion comprises at least one light-transmitting plate (32). The light-transmitting plate (32) is installed on the rotating shaft (31) and can be driven by the rotating shaft (31) to rotate, so that light rays from the light source can be emitted from the primary optical element (1) by means of rotation and then selectively pass through one light-transmitting plate (32) or do not pass through any light-transmitting plate (32), and then the light rays are projected by means of the secondary optical element (2) to achieve a corresponding signal lamp function or illumination function. The light-transmitting plate (32) installed on the rotating shaft (31) is used for replacing signal lamps in the prior art, thereby saving on space occupied by original signal lamps, greatly reducing the size of a headlamp, and meeting the requirement for the miniaturization of a vehicle lamp.