To descript the primary features about topology structure, operation and management of a supply chain instance exactly and improve the reusability of description result, one link like topology structure and two netlike topology structures adopted in current supply chain are analyzed. Based on the analysis result and OOP thought, node, arc, action, resource, policy and message are indentified to descript basic features of a supply chain, top object diagram of supply chain is drawn based on UML. Subobjects and attributes of above six basic objects are discussed in detail and further, correspondi...