The parking lot has experienced numerous equipment upgrades from manual management to unattended. It can also realize non-stop charging like the expressway. At present, the unattended parking lot system has been used in many places with good response. Let's briefly introduce several advantages of unattended parking lot system. Intelligent and convenient parking lot is the general trend. However, from manual payment by administrators to unattended, it is not just a simple change in payment form like other parking lot systems in the market. The unattended parking lot system is upgraded in terms of software and hardware, which truly realizes unattended in the parking lot, and ensures that more value-added services based on cloud data can be carried out under the original revenue mode of the parking lot. Compared with the traditional parking lot system, the unattended parking lot system has many advantages. Firstly, compared with the traditional parking lot system, the unattended parking lot system can realize non-stop traffic and save the time for car owners to pick up their cards; Secondly, the unattended parking lot system can save expenses for the parking lot. It saves the management expenses of managers in the parking lot and increases the income of the parking lot; Finally, the unattended parking lot system allows people to experience the one-stop rapid parking mode. On the premise of the rapid increase of vehicles, people will no longer be troubled by parking, payment and other problems. At present, this management mode can be realized in many places, especially in some large commercial complexes, where the traffic flow is large and it is troublesome to rely on manual management, and the unattended parking lot system can make up for these problems.