Emergencies and disruption events bring new challenges to disruption management, a new analysis method is presented in this paper to search the solution, through the analysis of situational awareness, reasons of trend and changes of disruption events in different stages get the impact to whole supply chain become clear, this paper also provides the idea of situational awareness indexes system construction, and some rules should be obey when design the index system. At last, “bullwhip effect” is adopted as an example to analyze how the situational awareness information is delayed.