Cellulose, as one of the most important natural polymers, has attracted attention due to features such as abundancy, renewability, non-toxicity, low-cost and biocompatibility. Nowadays cellulose is showing great potentials in different fields like paper, textile, food industry and packaging as well as pharmaceuticals and medicine, coating and membranes. This study aimed at producing cellulose nanoparticles through electrospraying method. In order to carry out the electrospraying process, at first swollen cellulose was dissolved in DMAc/LiCl solvent system. Then, the effect of various electrospraying conditions and set up parameters on the average size of electrosprayed nanoparticles was investigated. These parameters include solution concentration, applied voltage, nozzle-collector distance, feed rate and cellulose molecular weight. As electrospraying of cellulose was only possible in specific ranges of the mentioned parameters, the following ranges were chosen. Concentration= 1-3 wt%, voltage= 15-23 kv, nozzle-collector distance= 10-25 cm, feed rate= 0.03-0.0875 ml/h. These ranges were obtained by trial and error. The smallest nanoparticles acquired in this study had an average size of approximately 42 nanometers. Results showed that lowering the solution concentration and feed rate, as well as increasing the nozzle-collector distance and applied voltage led to a decrease in the average size of the electrosprayed cellulose nanoparticles. FTIR analysis on both raw cellulose powder and cellulose nanoparticles proved that no chemical change had occured in the cellulose structure after the electrospraying procees. Furthermore, FTIR results confirmed the presence of cellulose nanoparticles on the electrosprayed polyester fabric. According to XRD results, cellulose nanoparticles showed a lower degree of crystallinity and also smaller sized crystallites compared to the raw cellulose powder. Moreover, XRD results proved the absence of lithium chloride salt in the electrosprayed nanoparticles which were collected on the collector revolving in a water bath. It should be noted that cellulose nanoparticle have already been produced by other methods, i.e. acid hydrolysis and mechanical treatments such as high pressure homogenization, but the electrospraying method certainly offers advantages over the two. Electrospraying cellulose nanoparticles upon polyester fabric led to an increase in its moisture absorption capability and therefore a decrease in its static electricity accumulation. Key words : cellulose, nanoparticles, electrospraying, particle size, FTIR, XRD.