其他摘要：On December 11, 2001, China officially became the WTO member，since then, our country's import and export trades will have communication with the international market gradually, which affects the influence between CPI and PPI. Based on the volatility trend of CPI and PPI, The paper uses statistical methods to get the conclusions that CPI is the reason for the change of PPI and PPI is not the reason for the change of CPI. At last, the paper analyzes the reason for this new phenomenon and makes recommendations.
