Based on the analysis of low-density fiberboard in the field at research background and research status at home and abroad,the paper expounds the traditional manufacturing methods of low-density fiberboard and improvement researches related,as well as the functional characteristics of new type of low-density fiberboard.finally it analyzes the problem existing and solution to the development of low-density fiberboard.It is concluded that:low-density fiberboard would developed into high-quality material which have the properties of sound absorption,thermal insulation as well as mechanical strength.It would have an important significance to China's sustainable economic and industry of wood-based panels.