The yield of DCSB- 1 was calculated to be 40.8 wt%, indicating that there was a small amount of hemi-cellulose and lignin left. It also should be noted is that the cellulose contents in the cotton stalk bark taken from the cotton stalk at different positions were diverse and the part of the root of cotton stalk bark has more hemi-cellulose and lignin and less cellulose. To get the average and believable result, the cotton stalk bark taken from the cotton stalk at different positions were mixed for the experiments in this work. Fig. 1c-e presents the morphology change of DCSB-1 fibers after the pre-treatment processes, indicating that the alkalization and DMSO treatment processes enable the DCSB-1 fibers to be separated from their matrix. It can be seen the individual fiber with a diameter about 10 um as the red arrow marked in Fig. 1d and e.