Abstract
Public health events endanger the citizen health, economic development, social stability and national security seriously. Emergency management requires the joint participation of multiple parties. Therefore, we construct an evolutionary game model involving government department, pharmaceutical enterprises, citizens and new media, analyze the evolutionary stability, solve the stable equilibrium points using the Lyapunov first method and conduct the simulation analysis with Matlab 2020b. The results show that, firstly, the greater the probability of citizens making true evaluation, the more inclined the government department is to strictly implement the emergency management system, and when true evaluation causes the government department to bear more punishment, the probability that the government department doesn't strictly implement is smaller; secondly, when the probability of citizens making true evaluation decreases, new media are more inclined to report after verification, and when new media lose more pageview value or should be punished more for reporting without verification, the probability that they report without verification is smaller; thirdly, the greater the probability of citizens making false evaluation, the less enthusiasm of pharmaceutical enterprises to participate in emergency management, which indicates that false evaluation is detrimental to prompt pharmaceutical enterprises to participate; what's more, the greater the probability of new media reporting after verification, the greater the probability of pharmaceutical enterprises actively participating, which shows that new media's verification to citizens' evaluation is beneficial to emergency management. So, this paper provides suggestions for the emergency management and supervision.