Using Baidu Index to analyze the temporal and spatial evolution characteristics and influencing factors of network attention of Shanghai marathon under the impact of epidemic situation. The results showed that novel corona virus pneumonia incidence was negatively correlated with the two curve of Shanghai marathon network concern. Shanghai marathon demand shows a very strong “sensitivity”，and this “sensitivity” is ultimately transmitted to the development of the whole marathon industry. ② From the distribution of provinces，Hubei and Fujian are the most sensitive，Beijing and Henan are more sensitive，while Liaoning，Sichuan，Hebei and Heilongjiang are generally sensitive；In terms of distribution cities，Wuhan，Ningbo and Nanyang are the most sensitive，while Tianjin，Chongqing，Nanjing and Chengdu are generally sensitive. ③ Under the epidemic situation，the relevant information of “how much is the whole marathon”，“official website” and “photos of Marathon” and “origin of Marathon” before the Shanghai marathon are the focus of users. The attention to relevant information “live” and “photos” has increased significantly. “Shanghai online marathon” attracts more attention from users. On this basis，we should build a marathon crisis management mechanism；Using Internet resources and technology to predict marathon demand trends scientifically；Strengthen media publicity and promotion；Strengthen the publicity and promotion of key groups and areas；Put forward suggestions to improve the service level and quality of marathon.