In the logistics process, including logistics and the necessary products sent from the manufacturing plant to the distribution process forward logistics distribution centers; logistics products required from the distribution center to the customer's distribution process forward distribution process; recovering from the customer to return the product reverse distribution process distribution centers; recovering from the distribution center to return the product to the production and distribution process appeared to reverse four distribution stages, four distribution phase can be simple and comprehensive overview of the basic work of the logistics supply chain. Since the advent of computer technology, is the distribution of these four phases to achieve a rapid, accurate logistics process.