The invention relates to the technical field of intelligent traffic, in particular to a region-based parking service and management method and system, and the method comprises the steps: obtaining the region information of a region, wherein the region information comprising a region attribute, a region number and a region position; acquiring crowdedness degree information of areas corresponding to different area attributes; adjusting the area attribute of the area, expanding the area range with the high crowding degree to reduce the crowding degree, and reducing the area range with the low crowding degree to improve the space utilization rate. By establishing the area model and the attribute model, the mutual relation between the area and the attribute is cleared, the area attribute of the area can be adjusted, and finally, the parking supply and demand in the area are balanced, so that the problem of time-period and regional imbalance of the parking demand and parking space supply is solved, the area use efficiency is improved, and the parking problem is solved.