The invention relates to a barrier-free parking management dynamic guidance system. The system comprises a parking lot management system, a traffic data management center and parking guidance display terminals, the parking lot management system is located in a parking lot, the traffic data management center is located in a traffic administration department, the parking guidance display terminals are located on various road sections, and the system is a diversified and integral comprehensive management system which is designed for achieving traffic dynamic parking guidance in different areas. According to the system, a network synthesis access technology and transmission control protocol/internet protocol (TCP/IP) are applied, the parking lot management system is integrated in the traffic data management center, real-time interaction of parking resource supply and demand information of different areas is accelerated, according to road network traffic condition at present moment, information integration and analysis application technology and ant colony algorithm are applied so as to obtain the best driving path to arrive at an unfilled parking lot, and parking guidance information is issued to the display terminals by a traffic information issuing platform one time per second. By means of a plate number identification system, limits of picking up ticket, picking up card, swiping card and the like by parking in the past are overcome, when vehicles pass through a passageway identification system, the system recognizes plate numbers of passed vehicles automatically, and 'barrier-free' parking is completely achieved. By means of the system, equivalently 10%-15% of police strength are increased for traffic management, the space-time control capacity of traffic management and handling capacity of road surface traffic accident are effectively enhanced, the traffic management overall level is substantially improved, and the intelligent traffic management capacity, efficiency and level are greatly improved.