The research of the integration of feed industry chain market,has a very important theoretical and practical significance to grasp the overall performance of China’s feed market and further promoting the sustainable and healthy development of the industry.In order to understand the integration of China’s feed industry chain market,this paper analyse the price system of feed industry chain which is composed of corn,feed,pig prices by using the vector error correction model,granger causality test,impulse response function,variance analysis and other quantitative analysis methods.The research found that:The integration of corn-feed chain,feed-pig chain is effective in short-term,but the long-term effect is not good; the price of raw materials (such as corn) have a more significant impact to the price of feed and pig; The fluctuations of feed price can be attributed to the inertial impact of itself,with the passage of time,the influence of the inertial impact on the industry is declining,while the impact derived from the industry chain is showing a strengthening trend.Finally,this paper puts forward the relevant policy recommendations,such as improving the degree of integration between the various links,and the strength of feed enterprises,restructuring the industrial chain.