At the beginning of 2020，the COVID-19 spread all over the country，and the marathon industry suffer a serious defeat. Based on this，this paper uses the literature review，mathematical statistics and data analysis method，with help of baidu index，to explore the development status of China marathon during 2020 outbreaks，as well as to provide the reference and point out the direction of the recovery and development of China marathon in post-pandemic era. The results show that a large number of marathons events have been postponed or cancelled due to the pandemic；Marathon events have been resumed in the second half of the year，mainly in the eastern region，which were influenced by the implementation of pandemic prevention and control measures and economic development；The development of online marathon performed better to release the demand of runners. Accordingly，this paper also provides development suggestions on aspects of marathon industry integration，marathon event transfor-mation and upgrading，marathon runner physical and mental recovery，online marathon normative development.