A series of the poly(ethylene glycol)-polyurethane (PEG-PU) containing perfluoropolyether(PFPE) was synthesis with increasing PFPE contents, and lithium perchloride was doped in host polymer, and then their morphology and properties was characterized with Fourier transform infrared spectroscopy, differential scanning, gel permeation chromatography. The results showed that fluorinated polyurethane was successful synthesized, and then when the salt was doped, C-F and C-O-C streching band was moved to the lower frequency with the higher salt concentration.