The embodiment of the present invention provides a method and system for placing an order for transportation, wherein the method includes: pre-marking the order priority of the working machine; if multiple working machines issue an order order at the same time, identify the priority Place an order machine; judge whether the handling feature information of the priority order machine satisfies the preset condition for triggering a priority order; if so, place an order preferentially for the priority order machine. By pre-marking the order priority of the working machine, when multiple working machines issue order instructions at the same time, the priority ordering machine is identified, and whether the handling feature information of the priority ordering machine meets the trigger priority Judging the preset conditions of the order, so as to decide whether to place the order first, so as to ensure that the important machine is always in the working state, prevent the important machine from idling, and avoid the problem caused by the order. Capacity loss, thereby increasing production efficiency.