Abstract: Polyethylene glycol diacrylates(PEGDA)monomers, which contain double bond on the terminal group of polyethylene glycol(PEG)and can be used in synthesis of UV-curable solid polymer electrolytes (SPE), were prepared through esterification of PEG and acrylic acid.A cured conductive polymer film consisting of lithium salt was then obtained by irradiation with ultraviolet rays.The factors affecting film-forming,photosensitivity and conductance were studied.From experiments, while Li/O=1/6 and n =18,the ionic conductivity of the SPE membrane could reach 10 ^-5 S·cm ^-1 at room temperature and its performance was relatively good.