This paper investigates the source and treatment of supply chain collaborative information in terms of Information Theory. It indicates that that the supply chain collaboration is one part of economic activities and that the supply chain collaborative information is one part of economic information. It proposes the hierarchy and main representation of supply chain collaborative information in economic information. This paper suggests that we cannot gain economic profits independently, which can be achieved by releasing or discovering demand-supply information and providing products and services. The Information Theory can support the understanding and treatment of supply chain collaborative information. The fundamental construction of supply chain collaborative information is based on the taxonomy and arrangement of products and services. The search for supply chain collaborative information is the key to obtaining the information resources and the evidence of decision optimization information. It is necessary to search, categorize, filter and aggregate information in connection with supply chain collaborative activities according to the optimization targets.