Pedal power supply bicycle tail lamp

The invention relates to a pedal power supply bicycle tail lamp. The pedal power supply bicycle tail lamp is formed in the manner that a pedal portion is connected to a tail lamp body through a wire,the pedal portion is provided with a mounting plate, the mounting plate is provided with a fixing hole, a fixing plate is horizontally arranged above the mounting plate, holes are formed in the four corners of the fixing plate, and fixing rods are arranged in the holes; at least one piezoelectric plate is arranged on the fixing plate, and a pressing post is correspondingly arranged on the piezoelectric plate; and a foot pedal is also arranged above the fixing plate, the pressing post, the fixing rod and the pedal plate are integrally formed, and the pressing post is pasted on the piezoelectricplate. According to the pedal power supply bicycle tail lamp, the piezoelectric plate supplies power to the tail lamp, the device is installed on a foot pedal, and electricity can be generated whilethe foot pedal is pedaled,