Provided in the invention is an urban smart parking management system based on an SAAS mode. The system comprises a smart parking management platform built on a cloud computing server, a roadside parking management system i, an enclosed parking lot management system and an Internet Mobile APP application system, wherein the roadside parking management system, the enclosed parking lot management system and the Internet Mobile APP application system are in communication connection with the smart parking management platform. The Internet Mobile APP application system is used for developing a vehicle owner mobile phone APP based on an Internet mobile terminal and realizing GIS-map-based near parking lot information searching, parking space information checking, parking lot induction, mobile payment, parking space reservation and payment based on the Internet technology. According to the invention, the parking management system is combined with the static induction and dynamic induction functions in the urban smart parking management system closely and has advantages of high practicability, high intelligence and flexible charging, so that the parking order is managed well, the utilization rate of limited parking spaces is increased effectively, and problems of difficult parking space finding, difficult parking, and difficult charging in city are solved.