Nowadays, the parking problem has seriously affected people’s life. Aiming at the causes of parking problems, this paper proposes an intelligent parking system based on big data and the Internet of Things, and adopts a floating parking fee model to realize the reasonable allocation of parking resources. This paper obtains parking space and vehicle information through the deployment of iot terminal infrastructure equipment, adopts Zigbee technology for wireless short-range communication, NB-LoT technology for wide-area communication, transmits the information to the background database, and then makes statistical analysis of the information through Hadoop big data algorithm. The floating parking fee model is constructed according to the road and parking space information, and the real-time parking space price is determined. Big data algorithm is used to screen and recommend parking lot information for users. Based on the impact of distance and price on users, users can decide the choice of parking lot by themselves. The parking reservation system ensures the realization of user selection and facilitates users to obtain parking resources faster. In this process, the reasonable allocation of parking resources in time and space is realized.