With the rapid growth of cars and the scarcity of parking spaces, the contradiction between them has become increasingly acute. How to solve the "parking problem" has always been a problem of great concern to every country. Only expanding the number of parking spaces or building new parking lots by traditional means can not actually solve this problem. With the vigorous development of the Internet of things and navigation technology, which are widely used in all walks of life, the management of the parking lot is also transforming and upgrading to intelligent, so as to realize the interconnection of parking lot information. This paper presents an optimization design scheme of intelligent parking simulation system for automobile intelligent simulation. The intelligent parking simulation system is designed by database, and then the system is optimized by variable universe fuzzy arithmetic. The research of intelligent parking system based on intelligent simulation not only optimizes the allocation of social resources and promotes the image of the city, but also solves the problems of people's livelihood. It is an important part of promoting the construction of smart city.