Abstract: For improving the protective and stretch recovery properties of micro porous polytetrafluorethylene(PTFE) membrane,a co-stretching of PTFE and thermoplastic polyurethane(TPU) process was proposed,which avoided the problem of environmental pollution from the solvent.The structure,percentage stretch recovery and water vapor transmission quantity of the co-stretched PTFE/TPU layered membrane and PU coated PTFE layered membrane were tested respectively using electron microscope,universal materials testing machine,and the water vapor transmission rate-dish.The test results show that compared with PU coated membrane,the co-stretched membrane has no micropores on its surface,which enhances its protective and stretch recovery properties,while keeping moisture permeable for comfortable wear.