In the era of network media，the network attention to the pig epidemic amplifies the impact of the pig epidemic， and leads to extraordinary price fluctuations in pork and pig industrial chain.Based on the perspective of information transmission， the network attention index of pig epidemic is constructed according to the data of Weibo， Wechat and Baidu， and the price data from January 2011 to June 2021 and the BEKK-GARCH and TVP-VAR-SV models are used to explore the mechanism of the network attention to pig epidemic on pork price fluctuations.The study finds that the network attention to pig epidemic has a significant time-varying impact on fluctuations of pork price，with a positive correlation between the two in the serious outbreak.Moreover， the impact of network attention to pig epidemic on pork price fluctuations has a significant reversal effect.The network attention to pig epidemic inhibits the pork price fluctuations in the short term，but aggravates the fluctuations of pork price in the medium and long term，and the impact is sustainable.The impact effect of fluctuations of pig epidemic under African Swine Fever timing， which is a concern of the network，turns from negative to positive in 2 months， and the impact effect is higher under the period of concentrated outbreak of ASF than the initial period of the epidemic.Furthermore， due to the impact of network attention，the price fluctuations of the pig industry chain shows the reversal effect of inhibition in the short term and aggravation in the long term， and the longitudinal spillover effect of the industrial chain price fluctuations is asymmetric.Price fluctuations of downstream product respond to impact faster and more violently.Agricultural departments should closely observe the dynamic trend of network attention to live pig epidemic， timely provide early warning of pork price fluctuations and adjust the pork reserve strategy.