An increasing number of recent media reports on pork safety problems at source have attracted great attention and thought to be a growing threat to risk perception amplification on pork safety, even leading to public panic. This paper was among the first to explore the impact of media report about potential benefits and risk of traceability on consumer utility valuation and preference heterogeneities for select pork traits. By capturing key issues from online media reports in last three years both on benefit and risk as information shock showed to interviewees, we investigate willingness to pay from 788 consumers across sixteen traceability pilot cities, China. The findings indicate that consumers value certification more than other pork traits, while only preference on farmerinfo labeling significantly imcreases in negative information group. Highly valued farmerinfo and free range labeling in same class from positive information shock, while consumer preference for free range in one class from negative group.