Cellulose is the major carbohydrate produced by photosynthesis of plants,and is therefore the most abundant and widely distributed nature polymer in the world,whose biodegradability and renewability matches the concept of recycling economy and environmental protection.However,cellulose is hardly soluble in conventional solvents because of a large amount of hydrogen bonds[1].Current solvent system like NMMO and ionic liquid were all excellent solvent[2,3],but they still suffer some drawbacks like high dissolving temperature,slow rate of dissolution and high viscosity of the solutions obtained,not to mention the high costs.Thus,advances towards improved solvents for dissolving cellulose are still imperative.In this study,in order to achieve desired advantages like nonderivatization,low viscosity,high dissolution speed and low dissolution temperature,we used polar aprotic solvents with addition of few ionic liquid to dissolve cellulose,effects of type and ratio of polar aprotic solvents were investigated by means of conductivity measurement and microscope observation,and the possible mechanism of this dissolving effect was discussed.