Tool box lock, tool box and vehicle

The invention relates to a tool box lock which comprises a lock pin assembly, a lock body assembly, and a microswitch; the lock body assembly comprises a first plate body and a second plate body which can move relatively, and the relative movement process of the first plate body and the second plate body comprises a locking position for locking the lock pin assembly and an unlocking position for unlocking the lock pin assembly; the microswitch is used for being in communication connection with a lamp body to control the lamp body to be turned on and off; the microswitch is located on a movement path of relative movement of the first plate body and the second plate body so as to be in contact with or separated from the first plate body or the second plate body, so that the microswitch is switched between a closed position and an open position. According to the tool box lock, the microswitch is integrated on the tool box lock, the lock pin assembly is locked and unlocked when the first plate body and the second