Enzymatic　hydrolysis　lignin　(EHL),　isolated　from　the　enzymatic　hydrolysis　residues　of　the　biomass,　was　liquefied　using　the　mixed　solvents　of　polyethyleneglycol　(PEG)　and　glycerol　at　the　temperature　of　130-170.　°C　with　sulfuric　acid　as　a　catalyst.　The　influences　of　liquefaction　parameters,　such　as　the　molecular　weight　of　PEG,　mass　ratio　of　sulfuric　acid　to　EHL,　liquefaction　temperature　and　time,　and　mass　ratio　of　liquid　(liquefying　cosolvent)　to　solid　(EHL)　on　the　residue　content　and　hydroxyl　number　were　discussed.　The　FT-IR　spectrum　result　showed　that　the　liquefaction　product　of　EHL　was　polyether　polyol.　The　hydroxyl　number　of　the　liquefaction　product　was　80-120　mgKOH/g　higher　than　that　of　PEG.　©　2010　Elsevier　Ltd.