Using coconut-water as main culture medium, carboxymethyl cellulose -bacterial cellulose(CMC-BC) materials were obtained by adding carboxymethyl cellulose (CMC) into the Acetobacter xylinum culture system. The results suggested that CMC-BC polysaccharide produced with coco-nut water had shorter fermentation period and higher yield. And the added CMC can increase the productivity. When 0.6% (w/v%) CMC was added, the yield of dried product film was 10.41 mg/ml compared to 4.73 mg/ml in the control. Their FT-IR spectra suggested that CMC were incorporated into the BC in which the absorption of a carbonyl group at around 1598cm-1 appeared while no appearance in that of BC. Their properties were determined by X-ray diffraction (XRD), scaning electron microscopy(SEM) and thermogravimetric analysis(TGA). The CMC-BCs have the superior properties when the concentration of added CMC were ranging from 0.2% to 1.8%.