The optimization of logistics system is an important topic in the area of transportation, especially how to allocate profit of every member can influence sustainable development of collaborative relationship. In this paper the collaborative concept is introduced to automobile manufacturing, and the structure formed by collaborative members including an automobile manufacturer, a logistics supplier and a logistics seller is set up for the first time. Among the members, the automobile manufacturer is the key member; the logistics supplier and the logistics seller are members with relative freedom. Then, a profit allocation method based on Shapley value with risk correction factor according to contribution degree is put forward. Last, several profit allocation methods are analyzed by an example, and the studying result shows that the method suggested in this paper does well in coordination with profit of every member in automobile manufacturing.