Cyber attack and cyber spying are becoming increasingly rampant currently. Cybersecurity incidents occured frequently，and the cyber security situation is becoming worse. In order to cope with the complex cybersecurity situation，and reduce the harms and damages caused by the cybersecurity accidents to the maximum degree and protect the national and civil interests，U.S、EU and other western developed countries have taken measures as follows：brought the cybersecurity emergency into top-level design；enhanced the cyber security emergency management and coordinated mechanism；improved the risk＼incident classification gradually；strengthened the whole process of emergency response and reinforced the cybersecurity emergency management.