Abstract: The present invention is relative to a liquid electrolyte absorbing polymer which liquid electrolyte absorbing polymer is comprised of a water-insoluble polymer and of hydrophilic polar groups introduced into the water-insoluble polymer. The liquid electrolyte absorbing polymer is prepared by introducing hydrophilic polar groups to the water-insoluble polymer. A cell is formed using this liquid electrolyte absorbing polymer in dried state and the electrolyte in dried state as constituent units. The liquid electrolyte absorbing polymer and the cell employing the liquid electrolyte absorbing polymer are inexpensive, high in safety and are capable of absorbing plural sorts of the electrolytes simultaneously. The cell employing the liquid electrolyte absorbing polymer of the present invention is free from leakage or vaporization of the liquid electrolyte to outside the cell system and has prolonged shell life until use.