Abstract: In the investigation of the highlevel hidden geological hazards in Longli County,in order to understand the basic situation of the highlevel hidden geological hazards in the area and take corresponding prevention measures,on the basis of conducting field investigations,combining modern technologies such as drone aerial photography Means to investigate.After investigation,a total of 9 hidden highrisk geological hazards in Longli County are all hidden geological hazards,and the number of people under threat is 1,336 from 317 households.Aiming at the characteristics and influencing factors of highlevel hidden geological hazards in Longli County,the early stage focused on monitoring and early warning,and carried out engineering treatment or relocation of geological hazards with a large number of threats and serious impacts to completely eliminate hidden hazards.It is planned to adopt engineering treatment for 6 disaster sites;it is planned to adopt relocation to avoid 3 disaster sites.

Key words: highlevel hidden,geological hazards,prevention measures,collapse,monitoring and early warning