As one of the key applied forms on Internet, E-commerce has been growing at a very high speed in China in recent years. Starting from the perspective that E-commerce consumers pursue low price while retailers try to decrease the cost. Data mining is a form of knowledge discovery essential for solving problems in a specific domain. Individual data sets may be gathered and studied collectively for purposes other than those for which they were originally created. Data mining is most commonly used in attempts to induce association rules from transaction data.