Using principal component and cluster analysis, the classifications of pig industry of 17cities in Shandong province are analyzed based on related statistical data of Shandong Statistical Yearbook (2006,2016) to grasp the development and improve the division of pig industry. Study shows that Weifang,Dezhou,Jining,Heze,Linyi and Liaocheng are the pig?advantage?regions.Jinan,Binzhou,Taian,Qingdao and Yantai are the pig?general?regions.Zibo,Zaozhuang,Rizhao, Dongying,Weihai and Laiwu are the disadvantage?regions.Suggestions for pig industry divisionare put forward accordingly.