Abstract:  Since the supply chain in crossborder Ecommerce is featured with flexible and diverse soft structures, traditional methods of supply chain modeling and simulation can not effectively account for its complex changing characteristics. Based on a new perspective of the theory of generalized ecological community, it is found that five key observable factors influence the supply chain of crossborder Ecommerce: the number of the types of goods, duration time on the shelf, the number of newly added users, duration of goods kept by users and the buy rate. A simulation analysis based on MultiAgent modeling points out that there are three major measures to increase profit for crossborder Ecommerce platform and suppliers: increasing the number of newly added users within unit time, increasing buy rate and increasing the number of the types of newly released goods within unit time. To sum, the study offers an effective method of researching crossborder soft supply chain. 

Key words: Key words： crossborder Ecommerce, supply chain, ecological community, modeling and simulation