The invention discloses a parking place automatic lock and a control method of the parking place automatic lock, and belongs to the field of car networking. The automatic lock comprises a control device and a parking place lock body. The control device comprises an input module and a sending module, wherein the input module is used for receiving a parking place unlocking instruction or a parking place locking instruction input by a user; the sending module is used for sending an unlocking signal when the input module receives the unlocking instruction and sending a locking signal when the input module receives the locking instruction. The parking place lock body comprises a barrier arranged at an entrance of a parking place, a receiving module used for receiving the unlocking signal or the locking signal, and an executing module which is used for putting away the barrier when the receiving module receives the unlocking signal and resetting the barrier when the receiving module receives the locking signal. Unlocking or locking can be finished by inputting the instructions on a vehicle by a driver, the driver does not need to specially get off the vehicle to open or close the parking place lock body, and using is convenient.