Lignocellulose-montmorillonite nanocomposites were prepared in a alkaline solution through(intercalation) method,and the effects of reaction temperature,reaction time and the mass ratio of lignocellulose to montmorillonite on organic degree of nanocomposite were analyzed.The structures of nanocomposites were characterized by FT-IR、XRD、TEM、SEM.Results show that the sheet structure of montmorillonite is opened and lignocellulose is interspersed into the layers,forming new intercalated-exfoliated nanocomposites with better thermal stability.