It is an important early work that study on the emergency damage grades is the survival and safety caution of the overseas Chinese.At present，the related research achievements are rarely.Based on the statistic analysis of 304 related emergencies after 2000，we find out that the worse events（grade one，grade two，grade three）are mainly occurred on the continents of Africa，South America and Asia.Most of these types are political riot，armed violence and common crimes.Its main reasons are political contradictions，social crimes，accidents and ethnic exclusion.Africa emergencies are always accompanying the massive personal casualties.And there is a huge economic lost in South America’s events.However，the situation in Asia is more complicated.The pertinency crimes，exclusions and political exiles are direct to Chinese，especially in some Southeast Asia countries.Most damage grades in North America and Oceania are at the level of four and five.That means these events are common public affairs of which main reason is personal problems and most of them is students’ event.In addition，the Europe is in a period of transition time.Although there is no massive personal casualties which is reflect to the common crimes，the parade，economic dispute and personal problems are the main reasons.At last，the damage grade of overseas Chinese emergencies are also related to whether the migration policy is complete or not，the political situation is stable or not and the behavior of overseas Chinese is good or not.According to the characteristics of different continental emergencies，our research team give some suggestions to solve problems as followings.