The invention relates to a bicycle handlebar lock and a steering wheel lock. The bicycle handlebar lock comprises a lock shell and an actuating mechanism which is installed in the lock shell and used for achieving handlebar locking; the bicycle handlebar lock is characterized in that the actuating mechanism comprises a driving motor, a motor shaft of the driving motor is installed on a support plate in a supported mode, the motor shaft is provided with a driving gear which is meshed with a driven gear, the driven gear is installed on a shaft head of a threaded rod, the threaded rod is rotatably installed on the support plate, and a threaded section of the threaded rod is provided with a sliding block which is driven by the threaded rod to do horizontal reciprocating movement and connected with a locking rod assembly; the driving motor is connected with a controller used for controlling the positive and negative rotation time of the driving motor; the driving motor is connected with the controller of an electric bicycle, and the controller controls the driving motor to drive the sliding block arranged on the threaded rod to horizontally move along a sliding groove and enables the locking rod assembly to elongate or retract by a certain length. According to the bicycle handlebar lock, unlocking and locking of the handlebar lock are achieved through driving of the driving motor, the safety and reliability are achieved, and intelligentized control can be achieved.