Rice　husk　high　boiling　solvent　lignin　(RHL)　was　prepared　by　high　boiling　solvent　method,　and　its　characteristics　was　analyzed　by　using　chemical　composition　analysis,　infrared　spectroscopy,　and　1H-NMR　and　13C-NMR　spectroscopy.　The　optimum　prepared　condition　was　that　the　rice　husk　with　70%-90%　aqueous　solution　of　1,　4-butanediol　was　mixed　with　autoclave,　under　a　certain　weight　ratio　of　solid　raw　material　and　solvent,　heated　to　200-220°C　for　1.0-3.0　h,　then　water-insoluble　RHL　was　separated　from　the　liquor　reaction　mixture　by　water　precipitation.　Results　suggested　that　the　lower　digestion　temperature　and　concentration　of　1,4-butanediol　were　both　unfavorable　for　extracting　lignin.　Chemical　weight-average　molecular　weight　of　RHL　was　1939　g·mol-1,　and　the　residual　polysaccharide　content　was　5.12%.　The　1H-NMR　spectra　of　RHL　showed　the　relative　intensity　ratio,　aliphatic　over　aromatic　methoxyl　groups,　situated　at　3.5-3.8　and　3.8-4.0　ppm,　respectively.　The　results　from　13C-NMR　spectra　showed　that　β-O-4　bond　and　β-5　carbon-carbon　linkage　were　the　major　linkages　between　RHL　units.　The　C9-formula　of　RHL　was　calculated　by　the　experiment　data.　©　2008　Northeast　Forestry　University　and　Springer-Verlag　GmbH.