To provide an entering/leaving managing method for an unmanned parking lot capable of recording and retaining data on illegal leaving by which a parking charge and damages can be charged to the owner of an illegal leaving vehicle later by detecting the state of the illegal moving by a sensor arranged at a prescribed parking position in the case of trying to move the vehicle from the prescribed parking position before paying the parking charge, and recording and retaining this.

The entering/leaving managing method for the unmanned paring lot detects the moving state of a vehicle body through the moving detection sensor arranged at the prescribed parking position in the case of leaving the vehicle body after entering the vehicle body at the prescribed parking position, compares and judges the detected data time and the parking charge paying time to grasp the illegal leaving state at the unmanned parking lot.