Market information is the foundation of commodity prices. Based on “information economics”,this paper studies the impact of information in China and EU on the price fluctuations of pork price by using TARCH model and EGARCH model. The reuslt shows that an obvious information asymmetric effects exist in China’s pork market,the effect of the positive information is greater than that of negative information,and positive information can increase the fluctuations of pork price. While in EU market,the influence of the negative information is greater than that of positive information and there is no significant impact of asymmetric information effects. The reason is that the EU market has less policy intervention,the price “leverage effect” is not obvious. Therefore,Chinese government should reduce market intervention,and improve the transparency of the pork market.