According to the core version of Chinese Science & Technology Journal Citation Report( CJCR)2009—2013 edition and the Chinese core journal( 2011 Edition) collected on food science and technology periodicals,the article identifies 12 high impact journals for food science and technology. It analyzes the change of 11 evaluation indexes( total cited frequency,impact factor,the annual index,rate cited by other journals,diffusion factor,the half-life of the paper cited,source of literature,regional distribution,t...