Headlamp capable of achieving auxiliary light emitting through low beams and light emitting mode of headlamp

A low-beam auxiliary light-emitting headlamp comprises a low-beam auxiliary lamp body, the low-beam auxiliary lamp body comprises a light source and a reflecting surface for reflecting the light source, and the reflecting surface is obliquely arranged towards the transverse outer side of a vehicle body; an auxiliary light-emitting inclination angle a formed by the normal direction of the reflecting surface and the loading direction of the low-beam auxiliary lamp on the horizontal plane is 20-30 degrees; the reflecting surface comprises a group of reflecting units which are obliquely arranged on the reflecting surface, a gentle area is arranged at the joint of every two adjacent reflecting units, the angle between each gentle area and the corresponding reflecting unit is larger than 145 degrees and smaller than 170 degrees, and the original reflecting units with fall are shifted to be smooth surfaces which are mutually connected through the gentle areas left and right. And stray light reflected by the fall sur