The invention provides a parking lot management system using a wireless communication technology. The system comprises an authentication module, a positioning module, an identification module, a mobile phone APP, and a cloud background service terminal. The positioning module comprises an activator, an on-board diagnostic system, and a long-distance reading head. The identification module comprises a parking lot POS and a controller. An implement method comprises: when a vehicle runs in a lane, the on-board diagnostic system being immediately awakened by the activator of the lane, obtaining ID of the activator and generating a bill; the long-distance reading head sending the on-board diagnostic system bill to the parking lot POS, and the parking lot POS sending the bill to the controller; the controller automatically identifying the bill under an interconnection state, to intelligently controlling a parking lot barrier; before a user completes parking activity, the user paying on line through the mobile phone APP, the APP transmitting data to the cloud background service terminal, and the cloud background service terminal performing data integration processing and issuing to the controller. The parking lot management system improves parking lot system management level on the whole, and provides intelligent parking high-quality service for users.