The public emergencies are harmful to the society due to their inherent characteristics. As a part of the risk propagation，the emergency science popularization has played important roles in dealing with various public emergencies. In particular，during the outbreak of COVID-19，the emergency science popularization appeared frequently on social media platforms. For the purpose of investigating the emergency science popularization capacity of social media during the outbreak of COVID-19 from the perspectives of macro and micro levels，the text analysis on blog articles posted in the hot topic of COVID-19 on the microblog platform were analyzed using the NVvivo11 in this report. The research indicates that the social media played an important role in the social amplification process of risk. Moreover，the combination of primacy effect and the social media characteristics promotes the emergency science popularization on this platform to pay attention to the scientificity and popularity of the first science popularization，present the relevant personnel characteristics comprehensively，avoid the deviation of public sentiment，etc.