Abstract:With the very rapid development of the world,various kinds of emergent incidents occur frequently.It becomes more and more necessary to make overall and systematic research in the mechanism system of emergent incidents and emergency management,to make clear the differences and relationships between them,and to sum up general rules for universal applicability to guide the emergent handling process.Based on this background,this paper first makes a general description of the mechanism,and then describes in detail the mechanisms in the matters of principle,theory,process and operation,and the connection existing among these mechanisms,and taking them as a set of meta-mechanism system to play a still stronger guiding role in the actual work.