Polymer solid electrolytes have been interested in polymers 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, LiC1₄ and LiPF₆6 to apply polymer lithium battery. The crystallinity of PVS decreased with the addition of lithium salts and plasticizer, especially LiClO₄, and PC showed more effective than LiPF₆ and EC. TGA of polymer electrolyte increased with lithuim salt concentration whereas melting temperature(Tm) decreased less than 46℃.