Coded lock and coded lock randomizer

The utility model discloses a coded lock randomizer comprising an electric motor, and a transmission gear box, wherein the transmission gear box is connected with the electric motor and transmits an output power of the electric motor to a code mechanism of a coded lock. The transmission gear box comprises a box body and a multi-stage gear transmission component arranged inside the box body. The multi-stage gear transmission component comprises a mounting shaft, and a clutch transmission gear used for the transmission by engaging with the adjacent transmission gears. The mounting shaft is installed on the box body and is able to move axially. The coded lock randomizer further comprises a drive device which is connected with the mounting shaft for driving the mounting shaft to move, thereby achieving the switching between the separated state and the engaged state of the clutch transmission gear and the adjacent transmission gears. The provided coded lock randomizer solves the problem of vibration caused by the discontinuous transmission of the randomizer transmission mechanism. The utility model further provides the coded lock having the coded lock randomizer.