Mud flap structure for rear-wheel of bicycle

The utility model relates to the field of an assistant device technology of a traffic tool, in particular to a rear mudguard structure provided with a tail lamp; the utility model comprises a rear mudguard, which is arranged on the vertical tube of a seat pillow of the bicycle; a glistening cover is arranged on the tail end part of the mudguard; a alarm lamp unit is arranged on the inner side of the glistening cover; the power of the alarm lamp unit is supplied by a battery; the battery is arranged inside a battery slot on the tail end of the rear mudguard. Because the glistening cover and the alarm lamp unit are directly arranged on the tail end part of the mudguard on the bicycle, the utility model is convenient to be assembled and disassembled; in addition, the utility model is not easy to fall off when being collided; by using of the self-glistening effect of the glistening cover and the function of a contact component and an sensing component, the utility model can make each lighting body send out an alarm light so as to realize the safety and alarm effect greatly.