Polymer electrolyte membranes are essential parts of li-ion battery;their characteristics,such as ionic conductivity and mechanical strength are the key factors to determine the performance of the li-ion battery.The electrolyte system with microporous P (VDF-HFP) as matrix has an excellent overall performance,which has attracted more attention from many researchers,and the relative research fruits have been applied to the industrialization of polymer li-ion battery.A brief comment was presented on research progress on microporous P(VDF-HFP) polymer electrolyte membranes.