Forest and grassland fire is listed by the United Nations as one of the eight natural disasters in the world,which not only severely damages forest resources and ecological environment,but also causes great harm to people's lives,property and public safety.China has a vast territory,and the task of forest and grassland fire prevention and control is arduous.Fire prevention has always been the top priority of forestry and prataculture.After the reform of the government institutions,National Forestry and Grassland Administration is mainly responsible for forest and grassland fire prevention,carrying out fire prevention patrols,fire source management,daily inspection,publicity and education,construction of fire prevention facilities,and organizing local forestry and grassland departments to deal with early fires.The major project construction plan for ecological protection and restoration support system is one of the nine special plans in the overall plan for the national major ecological system protection and restoration major project,clarifies that in enhancing the protection capacity of important ecological resources such as forests and grasslands.It is necessary to carry out the construction of forest and grassland fire prevention and extinguishment support systems,which provides a fundamental basis for forest and grassland fire prevention in the new era.By understanding and grasping the current situation of forest and grassland fire prevention work,this paper proposed thoughts on the construction of forest and grass fire prevention system,strengthening the early fire situation and improving the guarantee ability in the new era from the perspectives of climate,forest conditions,social conditions,and from the responsibility system,capacity building and other multi-scale.The system construction ideas provided a references for promoting the high-quality development of forest and grassland fire prevention work.