Abstract: Lignocellulose comes from a wide range of sources and is the most abundant renewable resource． However, lignocellulose has a dense structure and is difficult to degrade, so pretreatment is required before lignocellulose is utilized． Pretreatment of lignocellulose largely determines technological feasibility, economic feasibility and environmental sustainability． Application progress of pretreatment in bioenergy recovery of lignocellulose was discussed in order to provide reference for related industries to achieve efficient lignocellulose biotransformation．