Abstract: 【Objective】In order to improve the utilization efficiency of agricultural machinery and solve the problem of “no agricultural machinery availability” for farmers, it is urgent that a set of scientific and rapid agricultural machinery emergency dispatch system needs to be designed.【Method】The rise of the Internet of Things has provided new opportunities for the development of modern agriculture. The agricultural machinery emergency scheduling system was constructed in a shortest path way by GPS, GPRS, GIS and JAVA technology. 【Result】Compared with the heuristic rule algorithm, the scheduling method reduces the average scheduling cost by 26% and the average scheduling time is about 1 second. 【Conclusion】The scheduling system can provide a set of real-time scheduling strategies, and the agricultural machinery can be scheduled in the shortest path with minimum cost according to the background scientific algorithm. Its establishment is of great practical significance for guiding the automation, intelligence and information-based development of agricultural machinery operation.