In this paper, we employed the technology of Wireless Sensor Network to issue a paper of combined APP and microprocessor to implement parking lots with smart guide. According to the survey, the system currently used in parking lot management can only prompt the parking lot location and the remaining parking spaces. With the development of the economy, the closeness of interpersonal exchanges, and the advancement of urbanization, serious steam locomotive parking problems have arisen that makes many drivers to have to spend a lot of time looking for the parking space. For the above reasons, this special study focuses on providing a smart function with IoT system development features and self-managed parking by APP via the personal mobile devices. It can provide clear and convenient operation for the parking lot near the hotel, and how many parking spaces are available. The most important thing is to clearly indicate the number of parking spaces that can be parked in the parking lot, so that we can save a lot of find time for parking space. Upon completion, the following features will be provided: 1). We can find the nearby parking lot and the number of free parking spaces through the provided app. 2). The most important thing is that after arriving at the parking lot, you can clearly indicate and guide to the parking space that can be parked. 3). Similarly, by the functions provided by AAP, drivers can also know their parking time and the parking fees they should pay, and they can control the time and cost of parking economically and effectively.
