Abstract: More and more cross-border e-commerce platforms choose to build overseas warehouses overseas to solve cross-border logistics supply chain problems. Overseas warehouses have become a rigid demand for the overseas expansion of many domestic cross-border e-commerce platforms.The research question of this paper is that domestic cross-border e-commerce companies build overseas warehouse logistics transportation systems overseas. The logistics transportation system of overseas warehouses is mainly divided into three parts:First-haul transportation, Warehouse management and Local transportation. Based on the overseas warehouse cross-border logistics system of “Supply point- Overseas warehouse- Demand point”, the impact of coordinated transportation of bulk goods among overseas warehouses on transportation costs is taken into account, soTwo-stage mixed integer programming model is constructed which is to minimize warehouse building and transportation costs.

Key words: overseas warehouse location; cross-location collaboration; network flow graph; two stage decision making