Using thiol and acrylate as monomer,the absorption peaks of ene before and after polymerization are studied using FTIR spectrometer.The relationship of conversion rate and temperature is studied.A polymer stabilized ferroelectric liquid crystal device (PSFLCD) is fabricated and the amount of monomer is 10%.The relationship between conversion rate and orientation order of ferroelectric liquid crystal is studied.It shows that,the conversion increases with the increase of temperature and the orientation order of ferroelectric liquid crystal.The conversion rate is dominated by the orientation order of ferroelectric liquid crystal,and SmA is the best polymerization when fabricating a polymer stabilized ferroelectric liquid crystal device.