The utility model relates to a lock structure of a motorbike parking foot rest, and comprises a fixed block fixedly arranged at the motorbike bottom. The fixed block can be pivoted with the motorbike foot rest, and the motorbike foot rest is pivoted and assembled on the fixed block through a screw and a opposite screw rod which is fitted with a special screw. The utility model is characterized in that the exposed end of the special screw rod is provided with a ring groove and a locating hole; a fixed plate is extendedly arranged at one side of the motorbike foot rest to provide an assemble location for an electromagnetic valve lock; the electromagnetic valve lock is assembled and located on the fixed block, the exposed section of a lock extension bar of the electromagnetic valve is pivoted with a spring and a locating bar in order. When the motorbike foot rest is in the appropriate standing state, the locating bar is buckled in the locating hole of the special screw rod along the ring groove. When the motorbike is parked, namely the motor bicycle foot rest is in the appropriate standing state, the motorbike foot rest is in the locking state. Because the locating bar cannot be lifted, the motorbike cannot be drawn to move, not to say be driven. The utility model with the above structure can reach safe and rapid locking and avoid the motorbike from being stolen by a thief.