Earthquake emergency is a complicated and dynamic process,which requires the cooperation of all departments to carry out the emergency work efficiently. Based on the investigation and analysis of historical earthquake emergency disposal cases,this paper puts forward the general process of multi-agent earthquake emergency coordination under all levels of emergency response,and constructs the corresponding stochastic Petri net model. Moreover,based on the possible isomorphic Markov chain of state set in Petri net,the emergency coordination ability is evaluated quantitatively on the basis of calculating the stability probability of each emergency state. At the same time,the emergency behavior corresponding to the change of high utilization rate in the emergency process is taken as the key link of emergency disposal. By adjusting the emergency rate of each key link,the dynamic analysis of emergency coordination capability is further carried out,and then the relevant suggestions for improving the ability of emergency coordination and linkage are put forward,which can provide support for scientific earthquake emergency disposal.