Regenerated cellulose film is prepared successfully from sugarcane bagasse cellulose in ionic liquid 1-allyl-3-methylimidazolium chloride (［Amim］Cl).Its dissolution process was viewed by polarizing microscope.Properties and structures of the regenerated cellulose films obtained were characterized by infrared spectroscopes

scanning electron microscopy

X-ray diffraction

thermogravimetry (TGA) and strength test.The results showed that ［Amim］Cl is a good non-derivatizing solvent for sugarcane bagasse cellulose whose crystalline form transformed completely from cellulose Ⅰ to cellulose Ⅱ after regenerated directly from ［Amim］Cl solution.The cellulose film obtained by regeneration showed a dense structure and its thermal stability and tensile strength could be up to 292℃ and 144 MPa respectively.