Abstract: The method of composing hydrophilic sulphonated carbon is discussed. The performance test was done by IR, atomic absorbed method and spectrophotometric method. The results show that the hydrophilicity of sulphonated carbon obviously increases, the suspending liquid madeby sulphonated carbon has a good stability, which can satisfy the requirement of electrolyte during the electrodeposition. Besides, the method of carbon sulphonation adopted in the experiment is comparatively simple, faster and very convenient