With the rapid development of the city, the task of cleaning urban roads and other public facilities is getting heavier and heavier, which demands the mechanization degree of the municipal and sanitation work higher and higher. The unmanned sweeper is controlled by the center and not only has the characteristics of high efficiency, environmental protection and saving labor cost, but also can work automatically for 24 hours according to the planning path ,which realize cm-level precision positioning by the RTK difference technology. It greatly reduce the workload of the environmental sanitation workers .