Abstract: The emergency investigation is an important part of the emergency management system of geological disasters,and it is the technical basis for the emergency decision of the superior departments.The sudden geological disasters in Beijing have the characteristics of many points,wide range,small scale and large negative impact;the emergency investigation procedures,techniques and requirements of geological disasters have their own regional characteristics.Based on the summary and analysis of the previous geological disasters emergency investigation in Beijing,this paper discusses the history and present situation of emergency investigation work.Through the discussion of the current investigation system,some suggestions are put forward.