Polymer solid electrolytes have been interested in polymer secondary battery system because of it`s many advantages such as energy density, light weight, wide range of operation temperature, low cost and easy handling. In this study we used polyvinylsulfate, LiClO₄, and LiPF_6 to apply polymer lithium battery. The crystallinity of PVS decreased with the addition of lithium salts and plasticizer, especially LiClO₄ and PC showed more effectiye than LiPF_6 and EC. TGA of polymer electrolyte increased with lithuim salt concentration whereas melting temperature(Tm) decreased less than 46℃.